Different species within a community, whether native or nonnative, play similar roles in the community's ecology.
Answer the following statement true (T) or false (F)
False
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Ten seconds after starting from rest, a skydiver in free fall has a speed of about
A. 100 m/s. B. 10 m/s. C. 500 m/s. D. 50 m/s. E. more than 500 m/s.
Compared to land, water bodies:
A) are more greatly influenced by continentality. B) have a lower specific heat. C) warm more quickly. D) cool more slowly.
What statement best describes the concept of mutation?
A)It only occurs through external influences on an organism. B)It only occurs in sex cells AND is always inheritable. C)It only occurs in the weakest organisms. D)It is random in terms of fitness of organisms AND cannot be inheritable. E)It is inheritable when occurring in sex cells AND is random in terms of fitness of organisms.
The Younger Dryas event tells us that ________
A) ice core samples are unreliable proxy records B) we have not always fully understood proxy records, since it turns out that what we call the Younger Dryas event actually took place before the Elder Dryas event C) climate change has not always necessarily been a gradual process D) the more recent warming trends have typically been associated with unusually dry periods