Which is abiotic?

tree sap

insect

sunlight

wood table

Why do metals "give up" their valence electrons?

You think that something about the regular drink must have made it sink while something about the diet drink made it float

How can you connect four of them to produce an equivalent resistance of 0.25 kω?

Which type of rock is formed when heat and pressure act on existing rocks

What allows the bimetallic coil to turn on or off a heating or cooling system? The two metals contract the same amount. The thermostat is set at a particular temperature. The two metals expand differently. The coil comes in contact with air.

Why does the speed of an object change when a force acts on it?

What are factors that would change the position of the wave lengths measured? (There are more than one answer.) a) size of the tube b) tuning fork frequency c) distance between the tuning fork and tube d) room temperature e) area of the tube

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?