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
k0ka [10]
2 years ago
14

A paleontologist identified two distinct species of mollusks in the fossil record of a region. In the layer below a mass extinct

ion that devastated the region, the paleontologist observed that shells of species A was present in small numbers over a widespread area whereas species B was abundant and found in a few restricted areas. Which of the following predictions about the fossil record in the layer above the mass extinction is the MOST likely to be supported by further excavations?
a. Species A survived because of its widespread range including some areas that were not as affected by mass extinction.
b. Species A survived because the low number of individuals meant that there was less competition for resources.
c. Species B survived because it was the more abundant and more individuals survived.
d. Species B survived because the population was concentrated in a few areas and had a higher chance of survival.
Biology
1 answer:
zmey [24]2 years ago
7 0

Answer:

a. Species A survived because of its widespread range including some areas that were not as affected by mass extinction.

Explanation:

The species distribution might confer extinction resistance during massive extinction events. One of the most important reasons for a species -or any other taxonomic group- to survive massive extinction is its wide distribution area.

The broad geographical range of a group -as Species A in the example- enhances the survival chances during mass extinctions. When the event occurs, it severely affects most individuals of a certain area. If the species is restricted to that area, then the species will probably disappear, no matter the number of individuals living there.

But if the species is widely distributed, there are more survival chances. The extinction event will only affect a few regions, but not all of them, meaning that some of the individuals of the species will be able to survive.

Probably as only a few individuals of species A got to survive, they must have suffered the effects of genetic drift after the disaster, causing a reduction in genetic variability.

You might be interested in
Where does industrial waste come from?​
Schach [20]

Hello

your answer to this response is

Industrial waste. Industrial waste is the waste produced by industrial activity which includes any material that is rendered useless during a manufacturing process such as that of factories, industries, mills, and mining operations. It has existed since the start of the Industrial Revolution.

I hope this helsp you out

have a great  morning

FaithRawlins14

6 0
2 years ago
PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!
salantis [7]

Answer:

I cant see pic

Explanation:

4 0
2 years ago
Fats, oils, and cholesterol are all types of
erastovalidia [21]
<span>Fats, oils and cholesterol are all types of lipids.Lipids are biomolecules that consist in long chains of carbons and hydrogen, insolubles in water (becauise they are not polar). Many lipids have in common the functional group corboxilic, COOH. Cholesterol, fats and oils all have carboxlic group. </span>
8 0
3 years ago
Which photosynthetic process will be lest affected by shorter periods of daylight?
Rudik [331]
C is your answer .-.
6 0
3 years ago
Read 2 more answers
I need help plzzzz i need answer
lisov135 [29]
In 6 years the boy was changing and his body too so he might be growing idk what it’s about but yeah
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which of these would be true concerning mitochondria and nerve cells?
    7·1 answer
  • What is the stuff between bones in a joint?
    11·1 answer
  • Explain why cellular respiration can be considered a spontaneous reaction. Does it build polymers or does it break them down?
    12·1 answer
  • The majority of B-vitamin deficiencies in today's world can be associated with
    15·2 answers
  • If the lift was greater than the weight of the plane the plane would
    11·1 answer
  • Is it easy for an ecosystem to reach homeostasis
    7·1 answer
  • What are requirements or recommendations for a healthy diabetic diet
    8·1 answer
  • Which of the following terms is used to describe the physical characteristics of the individual?
    12·1 answer
  • Chlorophyll, the primary photosynthetic pigment, emits light in the red region of the visible spectrum. The presence of chloroph
    10·1 answer
  • One characteristic used to place organisms into kingdoms is
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!