Which adaptation is not an example of a structural adaptation?

needles on a porcupine

thick bark

needles on a cactus

a bear hibernating

Imagine that a biologist deposits 50 isopods on the surface of the leaf litter in a forest. the back ofeach isopod is marked with a dot of paint for identification purposes.

Which nutrient provides most of the body's material for building and repairing cells? a. vitamins b. proteins c. carbohydrates d. water

Why do you think central wisconsin has rich topsoil?

What is under ground minerals used for?

CLOZE 2 Natural selection does not happen to individuals; it occurs within

The "rate of absorption": A. Has to do with how quickly alcohol enters the bloodstream B. Has to do with how quickly alcohol is processed by the kidneys.

I will give brainliest to the first to answer! Give an example that shows water is an excellent solvent.

A marine biologist explains that the salmon adapts to its environment through descent with modification. What is "descent with modification"? A heritable trait can be changed from one generation to another.

What component of Earth's atmosphere exists entirely as a result of photosynthesis?

1: In general, surface water always flows A. downhill. B. from north to south. C. toward the equator. D. from south to north.