1st way is to stop water pollution
2nd way is to stop the lack of population of a spices
Answer:
Hydrogen Bonds
Explanation:
Hydrogen bonds allow for hydrogens to bond to each other. They are the strongest type of intermolecular bonds.
Hydrogen bonds are dipole-dipole, and when water molecules are close to each other, the hydrogen bonds form between the hydrogen atoms.
Answer: it grows a tube to travel down to the ovary
Explanation:
As a result of pollination, pollen grain lands on the sigma of the pistil or carpel. On the stigma pollen grain begins to germinate and grows a long pollen tube. The pollen tube grows longer and makes its way from the stigma, down the style and reaches to the ovary. Pollen tube carries two male gametes or sex cells. One male gamete fertilize the egg cell to produce zygote and the gamete fuses with polar nuclei to form primary endosperm cell.
A gene mutation may result in an oncogene. So during that cell's replication the gate keeper genes will no longer be able to suppress it. This results in a mutated daughter cell. If there is a subsequent mutation an a daughter cell, a tumor will be produced.
Gene mutation can also cause mosaicism and result in different phenotypes
