All mammals have hair because they inherited that trait from a common ancestor. Features that are inherited from a common ancestor are called:

Heather has to solve this system of equations using elimination. what should be her first step?

The human GM-CSF gene and the mouse GM-CSF gene vary by more than 60% in their DNA sequence. However, when scientists place the human gene into mice, it functions properly. What best explains why this happens?

The reabsorption of materials into the capillaries surrounding the tubules of nephrons is an example of what?

A fossil of a fern and other large-leafed plants were found in an area of Alaska. What does this suggest about this area in Alaska?

Which of the body's communication system operates the most quickly why

Genetic variation is important for evolution because

What is the term for a structure that has no use in an organism? A) homologous B) Index C) Vestigial D) Sedimentary

Which is the greatest benefit of sexual reproduction? Select one: a. capable of reproducing by meiosis b. ability to reproduce without a mate c. ability to produce genetically different offspring d.

When sea ice forms in the ocean, the salinity of the surrounding ocean water decreases increases remains the same.

Why do you think the processes of photosynthesis and respiration are interrelated? because in plants, both photosynthesis and respiration are continuous processes that take place through day and night because the oxygen produced in photosynthesis is