How did bacteria make complex life on Earth possible?

By releasing oxygen into the atmosphere

B

By destroying life-inhibiting volcanoes

By evolving rapidly into multi-celled organisms

All of the above

Which part (s) of cellular respiration take (s) place in the mitochondria? which part (s) of cellular respiration take (s) place in the mitochondria?

To be considered a living thing an organism must be able to a. swim. b. reproduce. c. digest food. d. talk.

Charles washes his hands every time he passes either the bathroom or the kitchen sink. Before he goes to bed at night, he checks several times to make sure that the stove is turned off.

In an experiment, there are two groups. Which group is not changed in any way? A. hypothesis B. variable C. experimental D. control

paragraph explaining how energy flows through energy pyramid trophinc level producer primary consumer desompsor sun secondary consumer tertiaty

Which of the following sentences is the best example of a hypothesis a. UV radiation does not cause skin cancer. b. chickens lay more eggs when they are happy. c. why does the earth orbit around the sun? d. how many types of organisms are there?

What will most likely result when the jet stream moves south of North Carolina

Why is the hormone oxytocin important?

4. One of the jobs of the endocrine system is to give directions to your body about when to grow and develop. Can you think of some times during a person's life when the body changes? Avita

Describe the effect of mutation