1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AnnyKZ [126]
3 years ago
15

During the cretaceous period, reptiles were the dominant species, and dinosaurs ruled earth. plants developed flowers and fruits

. at the end of the cretaceous period, about 65 million years ago, 50% of the plants and animals on earth became extinct and dinosaurs were never to be seen again. what is thought to have caused the mass extinction at the end of the cretaceous period?
a.global warming
b.an asteroid hitting earth in mexico
c.extensive volcanic activity world-wide
d.the start of glaciation and climatic changes
Biology
2 answers:
snow_tiger [21]3 years ago
6 0

Answer:

it B very sure

Explanation:

Mademuasel [1]3 years ago
5 0

Answer:

B

Explanation:

I took it on usa test prep

You might be interested in
What determines the function of a protein​
Sauron [17]

Answer:

The sequence of amino acids. - The three-dimensional shape of the folded protein. - If the coding sequence has a mutation that leads to a change in the amino acid sequence, the protein may have a different three-dimensional shape, reducing its activity.

Explanation:

3 0
3 years ago
What is true of carbon atoms? (2 points)
Rudiy27
By process of elimination you can find the right answer. We know for a fact that carbon is found in all living organisms. That is why we talk about carbon based life forms. So the first statement cannot be true. You can figure out how many Valence electrons an element has by looking at the group number. The group number of carbon is 4 so the 2nd statement cannot be true. We know that carbon does bond with other elements because it is not a noble gas and therefore must be able to form compounds.
This means the answer must be they can form up to four covalent bonds
6 0
3 years ago
What quantity caan tell you whether a solution is acidic or basic
astra-53 [7]
I believe you use the pH scale with comparing acids and bases.
5 0
3 years ago
A student wants to know the effect a mutation might have on a species' survival. The change causes a rabbit to have mottled brow
Alenkinab [10]

Answer:a

C

E

Explanation:

Usatestprep

6 0
3 years ago
Read 2 more answers
Factorize this polynomial function <br>x³-7x+6<br>Hint:x³-7x+6​=0
dolphi86 [110]

Answer:

(x - 1)(x - 2)(x + 3)

Explanation:

f(x)=x3-7x+6 Since (a + b + c + d = 0), then f(1) = 0 --> one factor if (x - 1).

After division -->

f(x)=(x-1)(x2f2+x-6). The trinomial in parentheses can be factored.

Find 2 numbers knowing sum (1) and product (-6). They are -2 and 3.

Therefor, f(x)=(x-1)(x-2)(x+3)

5 0
3 years ago
Other questions:
  • Most photosynthesis takes place in the _______ of a typical leaf.
    9·1 answer
  • Describe how proteins synthesized in a cell are packaged, modified, and exported out of the cell. Be sure to include the contrib
    10·1 answer
  • Ou are treating a patient who was stabbed in the right side of the anterior chest wall. he has shortness of​ breath, weakness, a
    10·1 answer
  • Open dumping in landfills was outlawed in many states because of?
    12·1 answer
  • List the order of Producers that colonize the land After Lichens
    13·1 answer
  • Which is NOT a role played by a type of RNA in protein synthesis?
    7·1 answer
  • Calculate the rate of photosynthesis (mm/hr) for Elodea if when measuring net photosynthesis, the water level moved up 7mm from
    8·1 answer
  • Describe the trophic levels in a community
    15·1 answer
  • Which statement tells the most important factor that allows cells to keep accomplishing their many tasks
    13·1 answer
  • Question 20 of 25
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!