Definition: These are all the living organisms on earth.

What pattern is described by the theory of punctuated equilibrium?

Some organisms use chemosynthesis to survive. where do they get their energy for this process

Symptoms of diabetes and hypertension

Question 5 How did Charles Darwin provide evidence that evolution occurs? He sailed around the world on the Beagle making observations. He used DNA to show where adaptations come from.

Why were Archaea and Bacteria grouped together by biologists until recently? A. They look similar. B. They have very similar DNA. C. They are both very ancient organisms. D. They both perform the same ecological function.

In everyday life, a theory is an educated guess. In science a theory is

How can invasive species result in changes in other populations?

the classes are playing tug of war. Mrs. Larson's homeroom pulls with a force of 50N. Ms. Mitko's homeroom pulls with a force of 45 N in the opposite direction. What is the net force? And who won?

The synaptic cleft is the area between the a. soma of one neuron and the dendrite of another neuron. b. axon of one neuron and the dendrite of another neuron. c. axon of one neuron and the soma of another neuron. d. somas of two neurons.

When the blades of a fan move, they have mechanical energy. This mechanical energy comes from A. electrical energy flowing into the fan from the wall outlet. B. sound energy flowing into the fan from a radio. C.