Distinguish between the sex chromosome complements of human female and male germ-line cells at different stages of gametogenesis.

Gametogenesis is the formation of gametes, in males it is referred as spermatogenesis and in females it is called oogenesis.

Explanation:

Differences between spermatogenesis and oogenesis:

1. Spermatogenesis is formation of sperms from spermatogonia and oogenesis is formation of ova from oogonium.

2. Location: Production of sperms occur in testis and production of ova occurs in ovaries.

3. In males, spermatogenesis begins at puberty and its a continuous process till death whereas in females, oogenesis begins at fetal stages, it halts and rest of the process occurs after puberty till menopause.

4. Primary spermatocyte undergoes  meiosis-I to form two secondary spermatocytes, whereas primary oocyte undergoes to M-I to form a single secondary oocyte with a polar body.

5. Meiosis-II results in the formation of 4 spermatids or spermatozoa, in females however M-II results in only one ovum and second polar body formation.

6. Overall we can say that single spermatogonium forms 4 spermatids whereas single oogonium forms only 1 ovum.

7. Sperms are motile where as ovum in non-motile.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

yes it is   dangerous

explanation:

because that foot is discusting and could get you sick