Which of the following activities contribute most to climate change?

A. riding bike

B. bird watching

C. burning a campfire

D. taking a hike

How is each sense organ able to transmit a nerve impulse?

What does respiration mean? in biology?

A divide as it relates to Earth science is the a. stream that flows between two trees. b. rate of precipitation that exceeds infiltration. c. largest river system possible. d. elevated land area that separates one watershed from another.

Traditionally, it is taught that the neuron is the functional unit of the nervous system. what do some neuroscientists suggest is a more accurate functional unit? why?

A In 2014, approximately what percentage of U. S. households experienced food insecurity? a. 14% b. 9% c. 2% d. 5%

Why does pulse (and breathing rate) increase during exercise? (relate to cellular respiration)

If someone triple hops 8 meters on his r leg, and 10 meters on his l leg, is she at risk for injury?

The periodic table organizes elements by A increasing atomic mass B increasing atomic number C decreasing atomic size D different atomic color

Is there a particular side of the amoeba that is always the front of the organism? Explain.

Because it locates cellular devices, assigns frequencies, transmits signals to the correct sites, the ___ is probably the most important part of any cellular network.