A possible explanation for a natural event, based on observations and past knowledge, is a

What will be an ideal response?


hypothesis.

Biology & Microbiology

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Sulfur dioxide released by coal-burning power plants contributes to _____

a. ozone destruction b. sea level rise c. acid rain d. desertification

Biology & Microbiology

At what size of prey population does the rate of predator population growth reach zero?

a. 250 b. 300 c. 350 d. 400

Biology & Microbiology

In a large experimental Drosophila population, the relative fitness of a recessive phenotype is calculated to be 0.90, and the mutation rate to the recessive allele is 5 x 10^-5. If the population is allowed to come to equilibrium, what allele frequencies can be predicted?

a. q hat = 0.5 and p hat = 0.5 b. q hat = 0.22 and p hat = 0.78 c. q hat = 0.022 and p hat = 0.978 d. q hat = 0.000055 and p hat= 0.999945

Biology & Microbiology

The chances of guessing the right answer to this question are 

A. 1/1. B. 1/2. C. 1/3. D. 1/4.  

Biology & Microbiology