In order to reproduce, female sex cells must be fertilized by A. Sperm.
Answer:
2.
Explanation:
The movement of sediments from water (rivers) and wind (air) is basically what erosion is.
It is called haemogloblin.
Answer:
The first layers of earth are very loose, unconsolidated layers called soil, which is pretty easy to dig into, but as we go deeper we reach the bedrock, which is the hardest part of the soil profile, which is made of hard rocks and matter.This makes it harder to dig more and more deeper.
Explanation:
people do not use water correctly and waste it