1) A. Biological
2) D. Model
3) B. Cold
I think the answer is that it will be difficult to identify it by Exercise Tolerance Test (ETT). This test records the electrical activity of the heart while you exercise. It is used to identify rhythm abnormalities when exercising in people who experience chest pain.
Rob koch is the scientist who created tests that helped confirm those things
Answer:
Biological species.
Explanation:
Various concept like morphology species concept, ecological species concept was introduced by the scientists to explain the biological species. The biological species concept is accepted today.
The biological species concept explains that the group of interbreeding population that has the ability to reproductively isolated from the other such group.
Thus, the correct answer is option (c).
An animal who eats only plants.
Hope this helps!
~LeviOsa