Without what the greenhouse affect would not be possible

Where would a mutation need to occur for it to be passed onto offspring

What are some features of birds that reflect how they may have evolved from dinosaurs

Which statement describes an effect of the gulf stream? A-it brings warm water to the Gulf of Mexico from the North Atlantic B-it carries cold water to both of earths poles C-it keeps icelands capital warmer than new york city in the winter D-it

A population of squirrels found in the Midwestern United States looks nearly identical to a population of squirrels found in Canada. The two groups exhibit similar behaviors but have different diets.

What is the main purpose of seeds in plants that have them?

What is the most important feature of an enzyme

What are the four principal advantages of asexual reproduction.

Explain why trees are a renewable resource and how this resource can be maintained.

Which is a possible disadvantage of true breeding? A) The chances of genetic disorders are reduced. B) Successive generations have shorter life spans. C) No new genes are added to the future generations.

What has to be true in order for organisms to be considered the same species?