Why is evolution considered a theory?

A. It was proposed by a scientist.

B. It cannot be proven.

C. It is a guess about what happened.

D. It is backed up by scientific evidence.

In the early 1800s Darwin studied 13 kinds or finches what did Darwin hypothesize about these birds

In traditional recombinant DNA technology, a desirable gene from one organism is inserted into the DNA of a host organism.

In living organisms, complex chemical activities do what to substances A. builds them up and breaks them down B. only builds them up C. nothing D. only breaks them down

Explain how fossils provide information about extinct species?

How would a taxonomist decide to place a sea turtle into a paticular family

Why the carbon dioxide in the biodome decreased?

You have likely heard of investigators using DNA fingerprinting to identify individuals in crime scene investigations. Briefly describe your current understanding of the process of DNA fingerprinting.

Which autonomic system conserves energy by returning the body to a normal activity level through a lowered heart rate and blood pressure? a peripheral nervous systemb sympathetic nervous systemc somatic nervous systemd parasympathetic nervous system

The science of heredity

At which age range does the most intensive myelination of nerve cells occur?