If i'm not mistaken, it's the aorta
The geologic time scale is a system of chronological dating that relates geological strata to time, and is used by geologists, paleontologist, and other Earth scientists to describe the timing and relationships of events that have occurred during Earth's history. Hope I helped!
Answer:
Membrane bound organelles, such as a nucleus and mitochondria.
2 is A the rate decreases as the ph gets higher which is bad. The lower the ph the fast the rate of the enzymes are working
4) would be A as well. The colder the temperature the faster the enzyme will react
