The poison dart frog can have bright green, red, blue, or yellow skin that secretes a poisonous substance when it feels threatened. Which type of adaptation does this describe?

Which of the following could be found on either public or private land? a. state park b. single-family residence c. mine d. factory

The control of calcitonin excretion is an example of direct regulation

The branch of Earth science that focuses on objects beyond Earth's atmosphere is A. astronomy. B. oceanography. C. geology. D. meteorology.

Earth Science Which process within the rock cycle operates at the Earth's surface?

The moving local reversal of voltage is called a a. resting membrane potential b. active membrane potential c. refractory period d. action potential

What is the name of the process cells membrane pinching in the center to form two daughters cells

Which of the following is an example of an organism maintaining homeostasis? 1. A cat grooming itself 2. A bear nursing her cubs 3. A man sweating while he runs 4. A boy riding a bike

Which of the following is a characteristic of lipids? (Choice A) AThey are composed of nitrogenous chains. (Choice B) BThey are not soluble in water. (Choice C) CThey are either fats or oils. (Choice D) DThey are polar molecules.

A 3-month-old infant hospitalized with severe diarrhea has excoriated skin in the diaper area. the parents become concerned when they discover that the nurse has left the infant without a diaper. what is the nurse's explanation for this action?

Which of the following is an abiotic factor of an ecosystem? A. weeds B. a rabbit C. soil D. a snake