Answer:
it's necessary because your body uses water in all its cells organs and tissue. water helps you to keep moving and functioning.
Greenhouse gases, such as carbon dioxide (CO2), trap heat from the Sun. This causes the Earth's climate to grow warmer, resulting in "global warming".
It is a big depression i the Earth
Spell this in english maybe i can help :)
The answer is 25%.
Father : Aa
Mather : Aa
Offspring : AA : Aa : aa = 1 : 2 : 1
Recessive : 1/4 = 25%