4. Describe the main functions of the four components of blood.

What is a hormone? a. it is a gland that is produced by the endocrine system c. it is a chemical messenger that is produced by the excretory system b. it is a chemical messenger that is produced by the endocrine system d.

Kelp is a kind of: brown algae fungi plant red algae

What is a worm in the food chain

5. Describe the sequence of oxygen, carbon dioxide, and blood flow in your own words?

Why do all living things go through cellular respiration, ie, what is the purpose of cellular respiration?

Discuss why scientists know so little about Precambrian Earth

If two elements are in the same chemical family then what can be predicted about their Spectra

Which feature cause a gap in the geologic record a. extrusion b. fault c. intrusion d. unconformity

Which of the following correctly describes a way in which Earth's atmosphere interacts with the geosphere? It contains gases that living organisms breathe. It contains gases that trap incoming solar radiation.

Which fossils provide information as to the mode of formation of an oxygen-rich atmosphere by about 2 billion years ago? multiple choice dinosaurs stromatolites trilobi?