Certain types of atoms break down at a known rate. scientists can measure the amounts of the broken down products present in a sample to calculate its age.
what is this technique called?
a.
speciation
b.
the fossil record
c.
radiometric dating
d.
natural selection

Explain what happens at the saturation point when adding salt to water at room temperature.

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.

What describes the formation of horizon b? a. forms at the surface b. features parent material c. undergoes the most change d. forms due to decomposed material i think the answer is c. undergoes the most change