Which of these is not a response of internal stimuli?

A) eating when hungry

B) breathing hard when exercising because of a drop in oxygen levels

C) wearing sunglasses to protect eyes from UV rays

D) drinking when thirsty

Compared with small cells, large cells have more trouble doing what?

Where does the endocrine system release hormones into? Apex A) The stomach B) The bloodstream C) The mouth D) The pancreas

In what situation does the cell get larger

What was the coldest period in the Paleozoic Era, and why?

Which statement describes and advantage of nonrenewable resources? A. They produce clean energy B. They replenish quickly C. They are safe for the environment D. They are found in abundance throughout the world

Identify 2 things that can cause mutations. A) death B) exact copy of healthy DNA C) mis-copying D) damaging effects of radiation

In one to three paragraphs, list and discuss all the abiotic factors you noted in your study. Include but do not limit yourself to temperature, precipitation, soils, and water flow. Be clear, thorough, and scientifically accurate.

All fungi are A. eukaryotic B. prokaryotic C. unicellular D. multicellular

Releasing fish into a pond and seeing them swim in all directions is most like the process of

What is the circulatory system