If the reproductive isolation between two species is complete, they cannot produce viable offspring. There is not enough information to determine if they did or didn't have a recent common ancestor
Answer:The testes contain germ cells that differentiate into mature spermatozoa, supporting cells called Sertoli cells, and testosterone-producing cells called Leydig (interstitial) cells.
Explanation:
An observation is what you see a inference is a conclusion
Answer:
42.41 cubic centimeters
Explanation:
The volume of a cone with base radius r and height h is given by the formula;

The radius is give as 3 cm while the height as 4.5 cm. We plug in these values into the above formula and simplify;
