Why is cytoplasmic streaming called "active mass movement of cytoplasm"?

Which of the following is a common danger of commercial fishing?

Explain how scientists use geologic time to determine the age of landforms.

Which of these has happened to your food by the time it reaches your small intestine? a. all the macromolecules have been broken down completely. b. lipids and starches have been partially broken down. c. starches and proteins have been partially broken down. d. proteins and lipids have been broken down into subunits.