Carbon dioxide is a gas produced by___ and used by ___

a) photosynthesis ... carbon dioxide

b) animals ... plants

c) carbon dioxide ... photosynthesis

d) plants ... animals

The speed of a particle at a time t is given: v=at+b/t+c, Find the dimension of a

A solenoid is a coil of wire that has a current. true or false.

How are different types of radiation arranged along the electromagnetic spectrum

5. Which energy resources are found above the Earth's surface?

What do scientists use observations for?

This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is. This particle is the A. proton. B. photon. C. neutron. D. electron.

Projectile motion is an example of what kind of motion

What can change scientific knowledge?

6. What is ductility?

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching