The greater the number of amino acid differences in a protein like hemoglobin, the more closely related two species are.

An ecologist recorded twelve white-tailed deer, Odocoileus virginianus, per square kilometer in one woodlot and twenty per square kilometer in another woodlot. What was the ecologist comparing?

Differences between members of the same species are called a. predators. b. selections. c. traits. d. variations.

Explain why some groups doubt the occurrence of global warming and global climate change.

Is there a relationship between the size of a cell and it's function

Which is a nonrenewable resource? Soil, fish, wood, or coal?

Using a pH meter, you find that egg whites have a pH of nearly 8 and egg yolks have a pH near 6, if litmus paper turns blue in bases and red in acids, which part of eggs would turn litmus paper blue? A. both B. egg whites C. egg yolks D. neither

With all his gear neil armstrong weigh 360 pounds on earth when he landed on the moon he weighs 60 pounds why

Is a lion is a carnivore?

The process in which nuclear division occurs

Which did Kepler notice about planetary motion that caused him to propose Kepler's first law of orbital motion?