Need this quick plz and i will mark the

why did mendel prevent his plants from self-pollinating?

a. to control the crossing of the traits
b. to ensure that each plant's offspring would remain identical to the parents
c. to maintain a pure strain
d. so they could not produce offspring

again, i need this really fast, ! takk!

A. to control the crossing of the traits

Explanation:

If they self-pollinate, they don't cross traits with others.

answer: "circumcision is a common procedure in which the skin covering the tip of the penis is surgically removed."

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds