The theory of plate tectonics includes blank types of plate boundaries.

A. two

B. three

C. four

Which of the following is a metal? A. calcium (Ca) B. iron (Fe) C. sodium (Na) D. all of these

Changes in wind strength during an El Niño affect surface currents, which affects weather patterns. In 3-5 sentences, explain why this is the case.

What causes a two headed mutation or is this a malformation?

Blank is the thermal energy transfer that occurs from the motion of fluid in a liquid or gas

What holds two ions together in an ionic bond?

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