what killed the dinosuars?​

Answers

Answer 1

Answer:

An asteroid

Explanation:

Answer 2

Answer:

There are many theories but one I rely on is that the meteor crashed into the ocean and created a gigantic tsunami along with smoke that both killed the dinosaurs.


Related Questions

name the following the plant hormone which is responsible for the ripening of fruits​

Answers

Answer:

ethylene

Explanation:

plant hormone responsible for fruit ripening as well as senescence of vegetative tissues.

In 1935, Crocker proposed that ethylene was the plant hormone responsible for fruit ripening as well as senescence of vegetative tissues.

Urgent I’m so confused
Homeostasis is when an internal stimulus causes an external response.
True or False???

Answers

True. Both internal and external stimuli can cause a response or resulting reaction in a organism.
True. Hope this helps!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

is Wood Block a mineral or non-mineral

Answers

Answer:

Non-mineral

Explanation:

Wood is not a mineral. Minerals are rock and other types, but wood is not a rock.

select the correct answer from each drop down menu. BLANK will develop pharyngeal arches. BLANK will develop a postnatal tail in the embryonic stage.

the first blank the opinions are
1. earthworms
2. barb fish
3. crabs
4. leeches

and for the second the opinions are
1. ladybugs
2. snails
3. sea cucumbers
4. newts

Answers

[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the Biology

1) Brab Fish

2) Newts

You are a virologist interested in studying the evolution of viral genomes. You are studying two newly isolated viral strains and have sequenced their genomes. You find that the genome of strain 1 contains 25% A, 55% G, 20% C, and 10% T. You report that you have isolated a virus with a single-stranded DNA genome. Based on what evidence can you make this conclusion

Answers

Answer:

See the answer below

Explanation:

In double-stranded DNA, the ratio of purine bases (Adenine and Guanine) and that of pyrimidine bases (Thymine and Cytosine) is 1:1 according to Chargaff's rule. This means that the percentage of Adenine must be equal to that of Guanine while that of Thymine must also be equal to Cytosine.

However, in the case of the newly isolated viral strain, the amount of Adenine (25%) and Guanine (55%) vary while that of Thymine (10%) and Cytosine (20%) also vary. This is in contrast to Chargaff's rule. Hence, the isolated virus is a single-stranded DNA virus instead of a double-stranded.

-Give an example of a scientific law.
-Give an example of a theory in science.
Please help :)

Answers

Answer:

An example of a scientific law is Newton's first law.

Explanation:

It says that every object will remain at rest or in uniform motion in a straight line unless forced to change direction by the action of an external force.

An example of a theory in science is the Big Bang theory. It is something that someone came up with that is a rational explanation to explain why or how something happened or came into place.

Which describes a group of organisms that are members of a species?

Answers

Answer:

Population is defined as a group of organisms, which belong to the same species. Example- Human population includes a group of organisms that all belong to the species sapiens

Explanation:

how do we know energy is transferred in an energy pyramid?​

Answers

Answer:

While food chains and food webs show relationships between organisms, and energy pyramid quantifies the amount of energy transferred from one trophic level to the next, when one organism eats another, wherein approximately 10% of the energy available is retained and passed along.

Which theory of plate movement relies on the weight of the subducting crust?
A. Slab-push
B. Slab-pull
C. Mantle convection
D. Hot plumes

Answers

Answer:

The answer is slab-pull

Explanation:

Got it right on the quiz :))

4. Monosaccharides are to polysaccharides as
are to
amino acids : proteins
phosphates: lipids
nucleic acids : nucleotides
glycerol : fatty acids

Answers

Answer:

C

Explanation:

C

Monosaccharides are to polysaccharides as are AMINO ACIDS to PROTEINS.

Polysaccharides are carbohydrates composed of many subunits called monosaccharides, which are linked together by glycosidic bonds.

Proteins are biomolecules consisting of many subunits called amino acids, which are linked by peptide bonds.

Lipids represent a broad class of organic molecules composed of a glycerol backbone that attaches to one or more fatty acids.

Nucleic acids (either DNA or RNA) are biomolecules composed of long chains of nucleotides linked by phosphodiester bonds.

In conclusion, monosaccharides are to polysaccharides as are AMINO ACIDS to PROTEINS.

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What is a trophic cascade?

Answers

Trophic cascades are powerful indirect interactions that can control entire ecosystems
They are powerful interactions that can effect the world such as global warming

Why is water important for digestion

Answers

Water is essential for good health. Water and other liquids help break down food so that our body can absorb the nutrients. Water also softens stool,which helps prevent constipation.

How could you model this process in a different way? Explain how you’d design this model so that the entire process is clear to the reader.

Answers

Answer:

Edmentum and Plato sample answer

Like and Rate

An illustrated diagram would be helpful in understanding the transmission. The diagram would show an adult, with the major parts of the nervous system highlighted. The nerve pathways involved in stimuli processing and response would be highlighted in different colors to show autonomic and somatic and parasympathetic and sympathetic parts of the nervous system.

What organelle creates rRNA for synthesizing ribosomes?

Answers

Answer:

nucleus

Explanation:

The nucleus contains the cell 's DNA and directs the synthesis of ribosomes and proteins.

Answer:

nucleolus

Explanation:

Can someone help me with labels???? If they are correct ill mark u as the best answer

Answers

Answer:

1. Nucleolus- inside of the nucleus, makes ribosomes

2. Rough Endoplasmic Rectilium(Rough ER)- synthesizes proteins, has sibosomes

3. Smooth Endoplasmic Rectilium(Smooth ER)- does not have ribosomes, produces protein and lipid(fat)

4. Vacuole- stores water, sugar, and pigment

5. Chloroplast- photosynthesis happens here

6. Cell Wall- provides support

7. Membrane- controls what goes in and out of the cell

8. Mitochondria- power house of the cell, produces power from chemical energy

9. Golgi Bodies- Prepares proteins and lipids for the inside an outside of the cell

10. Ribosome(the little black dots)- attaches to Rough ER, transfer RNA to protein(protein synthesis),

Why were Oparin and Darwin's ideas about the Origins of Life not immediately considered to be part of a scientific theory about the origins of life on Earth?

Answers

Answer:

Darwin's opinion seems to have changed over time from his original remark in the 1861 3rd edition of The Origin of Species.

Oparin and Darwin’s ideas about the Origins of life are not immediately considered to be part of a scientific theory about the origins of life on earth because the ideas they proposed were difficult to test or observe.

What is Oparin's hypothesis regarding the origin of life?

According to the Oparin hypothesis life originate from inorganic molecules, like amino acids considered to be formed first, and then combines to form complex polymers.

This hypothesis has no scientific proof due for this reason the idea of Oparin idea was not immediately considered to be part of a scientific theory.

The theory given by Darwin challenged the idea that God is the creator of all animals and plants that are present on earth and there were no proper pieces of evidence to prove this theory when it is published to convince several scientists.

Due to a lack of pieces evidence and scientific proof, Oparin and Darwin's ideas about the Origins of Life on earth are not immediately considered to be part of scientific theory.

Learn more about Origin of Life, here:

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whos trying to helps me ?

Answers

Answer:

1.9mL to 8.7mL (Answer A)

Answer:1.9ml to 8.7ml

Explanation:

Which sphere was impacted the most?

Answers

Humans are part of the biosphere because we are living things. The biosphere includes ALL living things.

The component of the hydrosphere most greatly affected by this emission of carbon dioxide is the ocean. carbon cycleThe generalized carbon cycle.

Which of the following is qualitative information?

A. The mineral is red and hard
B. The mineral has a hardness of 8
C. The mineral has a mass of 2 grams
D. The mineral has a volume of 4 cm3

Answers

Answer:

option A. is correct.

hope it helps

Answer:

 A, The Mineral is red and hard

Explanation:

    Because the definition of qualitative is describing an object based on looking at it, and the other selections are just weight and feel.

              Hope This Helped

A car drives with a constant speed of 28 miles per hour. How far can it travel in 2 3/4 hours?

Answers

All we need to do is multiply.

Note that 2 3/4 = 2.75

28 * 2.75 = 77 miles

Best of Luck!

Answer: 77

Explanation:

All you have to do is multiply 28 by  2 and 3/4

Describe how the following are important in the makeup of the cell membrane: 1. Phospholipid bilayer 2. Proteins 3. Carbohydrates 4. Cholesterol

Answers

Answer:

1. Phospholipid bilayer - The lipid bilayer acts as a barrier to the passage of molecules and ions into and out of the cell

2. Proteins - Membrane transport protein (or transporter) is a kind of membrane protein that involved in the movement of ions, small molecules, or macromolecules across a biological membrane.

3. Carbohydrates - Carbohydrates covalently linked to proteins (glycoproteins) or lipids (glycolipids) are also a part of cell membranes, and function as adhesion and address loci for cells.

4. Cholesterol - Cholesterol reduces permeability of lipid membranes. ... Cholesterol plays has a role in membrane fluidity but it's most important function is in reducing the permeability of the cell membrane.

Explanation:

What is the importance of studying fossils? * A. To provide information about current life forms and current environmental conditions B. To provide information about how life and environmental conditions may have changed C. To provide information about how previous life forms would exist in current environmental conditions D. To provide information about how current life forms would exist in previous environmental conditions

Answers

Answer:

The answer D

Explanation:

Paleontologists find and study fossils all over the world, in almost every environment, from the hot desert to the humid jungle. Studying fossils helps them learn about when and how different species lived millions of years ago. Sometimes, fossils tell scientists how the Earth has changed.

Write one scientific question about the organism in the photo.

Answers

Answer:

why would this organism a close ancestor of humans evolve differently than us.

Explain in detail the inter-relationship
between the food chain and food
web.​

Answers

Answer:

A food web consists of many food chains. A food chain only follows just one path as animals find food. eg: A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass. A food web shows the many different paths plants and animals are connected.

11. Using the diagram to the left,if line n bisects QR find QP

Answers

Answer:

QP = 41

Explanation:

Its geometry its easy...

Since its getting cut through the middle that means they equal each other

3x + 5 = 5x - 19 (Use a calculator)

x = 12

Since your solving to find QP you plug it into QP

3(12) + 5 = 41

:)

In what form does carbon move from the atmosphere into the biological
food webs?

Answers

Answer:

Carbon enters all food webs, both terrestrial and aquatic, through autotrophs, or self-feeders. Almost all of these autotrophs are photosynthesizers, such as plants or algae. Autotrophs capture carbon dioxide from the air or bicarbonate ions from the water and use them to make organic compounds such as glucose.

NEED HELP ASAP FIRST PERSON TO CORRECTLY ANSWER WILL GET MARKED BRAINLIEST
4. What statement best describes the composition (parts that make up) of an
ecosystem?
a. Animals and rocks
b. Bacteria and fungi
C. Sunlight and water
d. Biotic and abiotic factors

Answers

Answer:

D

Explanation:

This includes all things living and not.

C, because an ecosystem can be categorized into its abiotic constituents, including minerals, climate, soil, WATER, SUNLIGHT. :)

is suger a monomer and suger cube a polymer?​

Answers

sugar is a monomer called monosaccharides and sugar cubes are polymer because a polymer has a molecular structure

explain why it is important for a scientist to be both logical and creative.

Answers

Because the way of using logic and creativity can help expand your mind through more ideas and facts. As your knowledge grows bigger.
well think of it like this, doctors have to think creatively sometimes in order to find ways to fix their patients problems right ? well then that would also show that scientists need to be creative when thinking of ways to make new medicines, deconstruct elements and make new compounds. Their creativity along with their logical knowledge of the task at hand gives them ample opportunity to create new ways to solve their problems. How do you think most pharmaceuticals were developed?
( hope this helps (: )

Suppose you have two liquids. One has a pH of 2. The other has a pH of 9. What can you tell from those pH?

Answers

Answer:

The liquid with a pH of 2 is an acid. The liquid with a pH of 9 is a base.

Explanation:

pH Scale:

1    2    3    4    5    6    7    8    9    10    11    12    13    14

A pH scale ranges from 1 - 14.7 is neutral.Any number on the scale less than 7 is acidic (acid).Any number on the scale more than 7 is basic (base).

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Pete and his friend Danny volunteered to bring sandwiches for lunch at a homeless shelter. They bought 7 loaves of bread. Each loaf had 18 slices of bread. The boys used up all the bread to make the sandwiches. They used 2 slices to make each sandwich. How many sandwiches did they make for the shelter? What is the value of the expression below when y = 7?y2+ 5y + 6 Give an example of the cumulative risk that affects all three sides of your health triangle. Identify each risk. How does your heart rate change and why The primary advantages of specialization are that employees acquire greater _______ from repetition, they avoid _______ time in shifting from one task to another, and they do the types of work for which they are ________ suited. letter to your friends about your visit to your What do you thinkwould happen ifEarth has no tectonicplates? What is the equation for g, which is f(x) = 2x2 + 3x 1 reflected across the y-axis? Group of answer choices g(x) = 2x2 3x 1 g(x) = 2x2 + 3x 1 g(x) = 2x2 3x + 1 g(x) = 2x2 3x 1 The school production of Our Town' was a big success. For opening night. 434 tickets were sold. Students paid $4.00 each, while non students paid $6.00 each. If a total of $2032.00 was collected, how many students and howmany non students attendedThe number of students was (Simplify your answer)The number of non-students was (Simplify your answer) How can regular participation in physical activity improve an individual's overall health?A. Regular participation in physical activity reduces the risk of developing various diseases.Regular participation in physical activity allows an individual to function on less sleep.C. Regular participation in physical activity reduces the need for a balanced diet.Regular participation in physical activity prevents an individual from developing certaindiseases.Please select the best answer from the choices provided A Figure A was translated 5 units left to create Figure B.Figure B was reflected over the line y=1 to create FigureC. Figure C was rotated 90 degrees clockwise aroundthe origin to create Figure D. Are Figure A and Figure Dcongruent? AProve your answer using any tools and explainreasoning in the box below:10 I WILL MARK U BRAINLIEST PLS HELPP Which of the following best explains the function of an Introduction? O outlines topics to be discussed O is simply the first paragraph O gives three pieces of support for every idea How many significant figures are in 10.060 L? a2+ 12a 7 3a2 5a+ 8 What are the roots of the equation? x + 3x - 18 = 0 Which shows how to find the value of this expression when X=-2 and Y = 5?(3xy-2)232 (-2)543(-2)65432(5) 6(-2)3(2) 854 Tim has a bag of 36 orange-flavored sweets and Peter has a bag of 44 grape-flavored sweets. They have to divide up the sweets into small trays with equal number of sweets; each tray containing either orange-flavored or grape-flavored sweets only. If there is no remainder, find the largest possible number of sweets in each tray. I have to write at least 100 words about a coming of age story but Ive never read one please help Given the polynomial 21x^4+3y-6x^2+34 1. What polynomial must be subtracted from it to obtain 29x^2-7? 2. What polynomial must be added to it to obtain a first degree polynomial? Write an equation in slope-intercept form of the line with slope 3 that contains the point (1, 2).