If you throw away an empty mineral water bottle, it will polutute the land. If you burn it, it will cause air pollution. Can you think of a way of avoiding both?

What is more likely to happen - flipping a dime and it comes up heads or rolling a 6-sided die and the number 6 comes up?

A study of the relationship between exercise and heart attacks that is conducted among men who do not smoke. is gender a confounder in this study?

During a biochemical reaction using an enzyme to break apart a substrate, which is true of the moments when the substrate and enzyme are bound together

What's the difference between a sex cell and a body cell

What protects a baby bird inside there shell?

If two organisms evolve in response to each other which evolutionary pattern is demonstrated

If there is a possibility of four different genotypes in the offspring that result from a dominant-recessive inheritance, and if the couple has four children, would they definitely have children with one expressing each genotype?

The ovaries are located in the ___ cavity.

Transport of materials into a cell against a concentration gradient, from low to high, requires A) water. B) energy. Eliminate C) osmosis. D) a passageway.

As ocean water in a tide pool warms and evaporates, the remaining water becomes a. cooler. b. saltier. c. calmer. d. darker.