The gradual decline in men's testosterone levels in middle age can reduce their sex drive
Answer:
There are 7800 meters in 7.8 km
1-
2-
3-
4-
5-
6-
7-
A- embryo
8-
A- egg cell
9-
A- sperm cell
10-
I think it’s organism since it already stated skeletal and respiratory then it means it cannot be tissue or organ because skeletal is included so i say go for organism
