The mass extinction that was most likely caused by the formation and retreat of glaciers was the ___ extinction

A. Cretaceous - Tertiary

B. End Triassic

C. Permian - Triassic

D. Late Devonian

E. Ordovician - Silurian

Which is an endocrine function? A. The pancreas releases insulin into the bloodstream. B. Salivary glands release saliva into the mouth. C. Pyloric glands release mucus to the stomach. D. Sweat glands release sweat to the skin.

Explain why the water plant contains the pesticide ddt

True or false: organisms may carry their genetic information in just one dna molecule or several dna molecules

Which of the following mutagens causes mutations by creating thymine dimers? a. nucleotide analogs b. nitrous acid c. ultraviolet light d. benzopyrene e. gamma rays

When a chemical has occured on you clothes you should?

A nurse is assessing a client with a diagnosis of primary open-angle glaucoma. which ocular symptom should the nurse expect the client to report?

The speed of neural impulses along an axon is increased greatly by

True or false: the northern lights are caused by earth magnetic field

Which of the following is a function of the nucleus? A) stores DNA B) stores sugars C) builds proteins D) packages proteins

Animals are motile because they have: a. energy b. metabolism c. nerve and muscle fibers d. legs or wings