One of the scientists in the video compared ice cores to rings on a
tree. When you look at a cross section of a tree trunk, you can see
rings in it. These rings indicate the annual growth cycle of the tree.
Counting them reveals how many years the tree was alive. What did
the scientist mean when he said that ice cores are like tree rings?

c

explanation:

not only is it colder, it also becomes darker, less salty, and more dense.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

i believe it is c: genes for body color and wing size are inherited separately from each parent.