Human actions have altered the global carbon cycle by ___
a. decreasing the number of photosynthetic organisms
b. cutting down large numbers of trees
c. inventing the internal combustion engine and burning fossil fuels
d. developing and using drilling and mining methods that allow access to previously inaccessible fossil fuel deposits
e. all of the above
Answer: e. all of the above
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Which of the following is not a characteristic of annelids?
A. They are segmented. B. They have bilateral symmetry. C. They have an incomplete digestive tract. D. They have a coelom. E. They have organ systems.
Phenotypic variation among individuals with the same genotype is known as genetic variance
a. True b. False
What would be the growth rate (r) of an island population of 1000 that has 30 births per 100 population, 20 death per
100 population, 5 immigrants per 100 population, and 10 emigrants per 100 population? a. +5 b. ?50 c. +50 d. ?150
e. +150When cells break down food molecules, which molecule is the energy used to form?
A.) ADP B.) ATP C.) glucose D.) None of the Above