Which of the following threats to survival of species is considered to be the most serious? a. hunting c. chemical pollutants b. habitat destruction d. introduced, "exotic" species

Why is far less energy available to top predators than to first level consumers in a food web?

Other than the methods listed above describe three ways carbon might be released into the atmosphere

Put the following events of transcription in chronological order. 1. Sigma binds to the promoter region. 2. The double helix of DNA is unwound, breaking hydrogen bonds between complementary strands. 3. Sigma binds to RNA polymerase. 4.

Which of the following is not true of density? a. density depends on mass and volume. b. density describes how tightly packed the particles are. c. density changes with gravity.

Several studies showed that after drinking coffee after drinking coffee​, subjects had increased blood levels increased blood levels of antioxidants. antioxidants have been associated withof antioxidants.

Why is ethical behavior particularly important in the agriculture industry?

What are the basic building blocks of living organisms

Amphibians such as frogs breathe both with their lungs and via gas exchange through their moist skin. Which is likely to be able to derive a higher proportion (fraction) of its oxygen demand from gas exchange through their skin as opposed to via its

Why can carbon from very large molecules?

Which of the following is the smallest living unit? organism tissue organ human (I thought it was the cell, but I don't even know anymore)