Female birds tend to select mates based on bright feather coloration. Which rule does this break?

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

What are genotypes? what are phenotypes?

Which of the following are the ingredients that go into the plant and are needed for photosynthesis? select all that apply. 1.) soil 2.) seeds 3.) carbon dioxide 4.) minerals 5.) glucose (sugar) 6.) water 7.) light energy (sunlight) 8.) oxygen 9.) air