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
marishachu [46]
3 years ago
9

The most massive extinction event in the history of Earth, in which 96 percent of all species became extinct over the course of

a few thousand years, occurred during the
a. Cretaceous.
b. Devonian.
c. Orodovician.
d. Permian.
e. Silurian.
Biology
1 answer:
Karolina [17]3 years ago
5 0

Answer:

D. Permian. This is when 96% of all species on the planet became extinct.

You might be interested in
Marine organisms that are euryhaline would most likely be found in which environment?
finlep [7]

Answer: Coastal estuary

Explanation:

Euryhaline animals are able to live in the wide range of salinity.These animals have the ability to live in the variety of water mostly fresh water.

The coastal estuary is one of the habitat of such animals. The green crab, molly fish are some example of the animals found in this environment.

Some of the euryhaline animals are also found in the salt and brackish water, fresh water, moderately haline et cetera.

5 0
3 years ago
The false spider mite, Brevipalpus phoenicis, has only two chromosomes. Which of the following pieces of evidence would allow yo
Reptile [31]

Answer:

The correct answer is - a. If these two mite chromosomes have different genes at different loci.

Explanation:

If it is 2n= 2, it means that it is diploid and has two sets of chromosomes in which one set comes from mother and the other from father which means parent's genes contribute to diploid equally. Both sets of chromosomes form homologous chromosome pair. Each homolog of the pair has the same gene at the same loci in diploid and if it has not the same homologous gene at the same loci these are haploid.

8 0
2 years ago
Doing what phase in the cell cycle is the dna Replicated
Vanyuwa [196]
During interphase, the cell grows and builds the nutrients required for the stage called Mitosis that prepares it for cell division and manipulate the dna
5 0
3 years ago
Suppose a segment of mitochondrial DNA (mtDNA) is compared between two similar modern-day species. It is known that this segment
QveST [7]

Answer:

24 million years

Explanation:

A: GCACTAAGCATCGATTT

B: GCACCAGGCACTGGTTC

There are 6 base pair changes between species A and species B. Since we know the rate of change is 1 base pair every 4 million years, we know 6x 4 million is likely how long ago the species diverged. 6x 4 million = 24 million years

7 0
3 years ago
An element's atomic number is 49. How many electrons would an atom of this element have?
erma4kov [3.2K]

49; Number of Electrons = Number of Protons = Atomic Number

7 0
3 years ago
Other questions:
  • Suppose you are an astronomer, and a child asks you to explain how long it takes light to travel through space. In your own word
    15·1 answer
  • Explain how gravity keeps planets in orbit around the Sun.
    8·1 answer
  • If 2 blood vessels had the same resistance while Blood Vessel 1 has a difference in
    5·1 answer
  • 7. Considere un sistema que contiene un mol de un gas monoatómico retenidito por un pistón. ¿Cuál es el cambio de energía intern
    12·1 answer
  • As a commodity producer, the price that you receive is likely to be different than the price your neighbor receives for selling
    14·2 answers
  • a cell contains a 4% concentration of salt. the cells enviornment is isotonic. which is a possible salt concentration outside th
    7·1 answer
  • How are scientists able to determine the composition and size of earth slayers
    6·2 answers
  • Will make brainliest<br> It’s question 42
    13·1 answer
  • Explain how the insecticide could kill the owls but not the grass hopper or mice
    6·1 answer
  • The___requires special transporters to move amino acids and vitamins into the brain.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!