a small, leafy branch is cut from the tree. After some hours, the stem of the branch remains firm, but the leaves become limp, suggest an explanation for this. stem remains firm and leaves become limp?

What type of natural vegetation covers most of canada?

Surface currents cause the formation of circular loops of moving water called

We are capable of making vitamin d within our bodies and do not necessarily have to consume it in our diet.

When amino acids are degraded for energy the amine group is converted to?

Which of the following is not a main characteristic of a mineral? A. Solid B. Predictable chemical composition C. Inorganic D. Man-made

Alice takes lithium to control symptoms of her mental disorder. alice is most likely suffering from

Which two species are most closely related? A) Dog and rabbit B) Human and dolphin C) Wolf and dog D) Giraffe and horse

Changes in chromosome number are usually the result of what?

Raccoons eat a variety of foods and can live in a variety of habitats, including locations near humans. Tiger salamanders eat an abundance of worms and insects and require wetland habitats so they do not dry out.

What is some conclusive evidence that organisms of two different species share a common ancestor?