How many different shapes of bacteria are there? a. 1 shape b. 2 shapes c. 3 shapes d. 4 shapes

What can be the cause of single gene mutation

What are three adaptations in humans?

Steps of the scientific method

Which statements describe effects of large asteroid and comet impacts? Check all that apply. They may cause extinction. They may cause small craters on Earth's surface. They may cause changes limited to within the crater.

Which of the following is an example of a secondary metabolism

The children in a family all have blue eyes. the biological parents also have blue eyes. the science that explains these similarities is called genomes. a. True b. False

An increase in the level of hormone A causes an increase in the level of hormone B. The increase in the level of hormone B then causes a decrease in the level of hormone A.

What did the shift from hunting and gathering to gardening lead to?

In the human body, oxygen is absorbed by the lungs and nutrients are absorbed by the small intestine. In a single-celled organism, this absorption directly involves the 1. nucleus 2. chloroplasts 3. cell membrane 4. chromosomes

The big chunks of earth's crust (plates) slowly moved around. This is called?