21. where and why are eggs produced in females? 22. where does a zygote implant in a female after fertilization takes place? 23. what are the roles of the fallopian tubes and the uterus? 24. describe the development of the fetus during the first trimester. 25. describe the development of the fetus during the second trimester.

21. The ovaries and because eggs are the start of the fetus. I can't correctly answer your other qeustions but I hope this one helps. GL.

hello

explanation:

jujj

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