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
Alexeev081 [22]
3 years ago
13

The largest mass extinction event in the history the Earth occurred at the end of the ___ period. A. Cambrian B. Ordovician C. D

evonian D. Permian
Biology
2 answers:
olga55 [171]3 years ago
7 0
Hello! The largest mass extinction in Earth's history occurred about 250 million years ago, right before the dinosaurs appeared. Devonian Period ended about 355 million years ago, which was before the mass extinction occurred. Therefore, C is eliminated. The Cambrian Period came before Devonian Period, ending around 485 million years ago, which also eliminates A. Ordovician Period ended about 445 million years ago, which also before the mass extinction. B is gone, which leaves us to the last available answer choice being D. The Permian Period ended around 250 million years ago, which was the time of the mass extinction. The largest mass extinction even occurred at the end of the Permian period. The answer is D: Permian.
Maru [420]3 years ago
7 0
The answer is Permian
You might be interested in
Describe the movement of the leg muscles as the leg is bent and straightened in a frog
noname [10]
The <span>movement </span>of the leg muscles as the leg is bowed and fixed in frogs is brought about by the rectus or frontal thigh muscles. When they get, the leg rectifies and cause a withdrawal in the biceps. This then causes a draw of the leg back towards the body.
7 0
2 years ago
Explain why Triethanolamine is a polar molecule. What can you do to make this molecule less soluble in lipids?
Lerok [7]
<span>Triethanolamine is a polar molecule because it has a net negative dipole. </span>2,2',2''-Nitrilotri(ethan-1-ol) from its IUPAC name, it can be seen that it has 3 OH group attach to it, where OH are negative dipole, since there are no molecule to counter act the negative dipole so it is polar
6 0
3 years ago
In fruit flies, straight wings are dominant and curly wings are recessive. What will the generations look like? Assume that Mend
nordsb [41]
The answer is B,C, and G
6 0
3 years ago
Read 2 more answers
In liver cells, the inner mitochondrial membranes are about five times the area of the outer mitochondrial membranes. What purpo
m_a_m_a [10]

Answer:

Option (C).

Explanation:

Oxidative phosphorylation may be defined as the process of the production of ATP molecule by the use of enzyme and transfer of electrons from one complex to the other complex.

The liver cells has five times large surface area of inner mitochondrial membrane than the outer membrane. This increases the surface area of the inner mitochondrial membrane that increase the rate of the oxidative phosphorylation. The complexes of the electron transport chain is located in the inner mitochondrial membrane.

Thus, the correct answer is option (C).

6 0
3 years ago
Read 2 more answers
Explain what is meant by the statement, "Cells are very different, yet very similar."
Svetradugi [14.3K]
Generally, any "thing" has many different qualities. If it shares roughly half these qualities with another "thing" they could be said to be very different and yet similar.  <span>In the case of cells, plant cells and animal cells both have a nucleus, protoplasm, vacuoles. Plant cells have cell walls and a more rigid structure</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which best describes how wedge basins form?
    10·2 answers
  • what method best explains how an organism regulates its blood pressure in response to a stimulus that causes a drop in blood pre
    8·2 answers
  • 1. A(n)<br> is the basic unit of matter.
    5·2 answers
  • How are carrots an energy link between you and the sun?
    5·1 answer
  • Please help me I would appreciate it
    15·2 answers
  • Choose all the answers that apply.
    10·1 answer
  • The cell membrane controls what enters and leaves the cell. Which of the
    5·1 answer
  • Two effectors in the body
    11·1 answer
  • How does the tilt of a planet affect its temperature?
    12·1 answer
  • Which can remove carbon dioxide from the atmosphere?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!