1. Break down of Food into Energy 
Oxygen
2. Absorb X - Rays in Bones Calcium
3. Cell Membrane Function Sodium
4. All Organic Compounds Carbon
The irght answer is 8.
Each parent will give half of its chromosomes to its offspring through the gametes (which are haploid cells, containing n chromosomes) which will then fuse (male and female gametes) to form a diploid 2n chromosome cell and will eventually give rise to a new individual.
So each parent will give 8 of these chromosomes to their offspring.
The correct answer is - underwater mountain ranges.
The mid-ocean ridges are actually underwater mountain ranges, which usually are very long, in fact the longest mountain range on Earth is created on the divergent boundary between the Eurasian and North American tectonic plates and between the African and South American tectonic plates. At the divergent tectonic boundaries we have the creation of new crust which rises from the mantle and fills in the gap between the tectonic plates. Because of the big amount of magma and high pressure, very big and long underwater mountain ranges are formed.
Answer:
its 30 N
since it didn't change it stays the same 30N.
