2 because animals do not have chloroplast or a cell wall
The work output of a machine divided by the work input is the resistance of the machine
Answer:
B. Fossil
Explanation:
According to National Geographic, "Fossils are the preserved remains, or traces of remains, of ancient organisms." When you find the impression of a leaf, the leaf imprint is the preserved remains of the leaf.
I'm not exactly sure what specifically you are asking for in relationship to balancing equations, but I have some examples with working out so you can examine them and try to go through the steps with them.
Hope this helps! <3
Answer:
The answer is natural selection
Explanation: