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sineoko [7]
3 years ago
5

Which of the following is true about natural selection? A. Natural selection does not cause a species to change. B. Natural sele

ction is the only cause of changes in a species. C. Natural selection usually causes a species to change suddenly. D. Natural selection usually causes a species to change gradually.
Biology
2 answers:
amm18123 years ago
6 0
These are all true except <span>"D. Natural selection usually causes a species to change suddenly," which is false. Natural selection and the subsequent changes to a species takes many thousands of years to have observable results. </span>
nikitadnepr [17]3 years ago
4 0

Answer:

D

Explanation:

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PilotLPTM [1.2K]

Answer:The based on this information interaction between these two species can best be described as COMPETITION. Correct option is B

Explanation:

Competition occurs between two species that shares the same requirements ( especially food) for survival.

Both the Western Toad and the Bull Frog has a similar niche because they require the same type of food (beetles, bees, and small aquatic insects) to survive in the environment of Arroyo Seco. Only one of the species will coexist in that environment and it's usually the survival of the fittest.

This explains the competitive exclusion principle proposed by Georgii Gause in 1934.

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Place the 4 steps of biofilm formation, listed below, in the correct order.
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Answer:

1. Surface (substratum) is preconditioned by environment molecules.

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Answer:

The mouse and shrew bones were common to all three owls so they were not useful in identifying environments. The gopher bones were unique to the great grey owl of Alaska. Gophers are rodents that are successful in areas with soft soil and lots of grass, so the gopher and this owl would be found in the meadows and evergreen forests of Alaska. The bat was unique to the barking owl of Australia. The bat would be found in woodland habitats where there are many trees the bat can hang from. The gull bones were unique to the short-eared owl of Cuba. Gulls are wetland birds, so the gull and this owl would be found in marshes and coastal areas.  

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