What is the mechanism by which hormonal birth control pills work?


Answer: they prevent ovulation

Biology & Microbiology

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Imagine that several thousand years ago, a group of bats and a group of frogs colonized an island at the same time. What can you expect of their current descendants?

A. There will be more frog species compared to bat species. B. There will be more bat species compared to frog species. C. The number of bat and frog species will be equal. D. All frog species will have become extinct on the island. E. All bat species will have become extinct on the island.

Biology & Microbiology

Many species of flowering plants reproduce asexually by __________. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

As two competing species approach their respective carrying capacities, the growth rate of the other species

A) accelerates. B) is unaffected. C) is doubled. D) slows down.

Biology & Microbiology

Dalton’s law of partial pressures states that the total pressure of a mixture of gases is equal to the sum

of the pressures of the individual gases. ____________________ Indicate whether the statement is true or false.

Biology & Microbiology