What can cause changes in the DNA sequence

T or f the earth is made of rock

Where does the right ventricle send blood?

Which digestive organ is responsible for digestion and absorption of nutrients in earthworms?

How are hormones stored and secreted? summarize them.

Describe 3 causes of genetic variation in a population

Which of the filling is a bacterial disease? a) flu b) cholera c) measles d) common cold

A measurement of a star's brightness is called

You are operating a powerboat at night. Your red sidelight must be visible to boats approaching from which direction (s) ? head-on only head-on and both sides head-on and behind head-on and port (left)

A graduate student finds an organism in a pond and thinks it is a freshwater sponge. a postdoctoral student thinks it looks more like an aquatic fungus. how can they decide whether it is an animal or a fungus?

i need the memorize the order of the metric system but i dotn know the sentence ... im pretty sure its king henry something thats all i know can you tell me the rest