The answer is called the foramen ovale. Hope this helps.
The answer is C since heterotroph means they don't have a way of making food
Im not sure but if you think of it, the one that you didn't put any salt is a independent variable because it doesn't really rely on anything it doesn't have salt. The Dependent variable would be the 2nd and the 3rd cup because it doesn't have much salt but the 4th cup has lots of salt so its basically controlled. Hope it helps !
Answer:
Gamete cell
Explanation:
One of the primary roles of the reproductive organs is the production of which of the following kinds of specialized cells?