Answer: Availability of water
Explanation:
When a person is travelling from a forest ecosystem towards grassland ecosystem the number of trees gets reduced in number.
The trees are replaced by prairie grasses. This change is because of less water availability in the area having grass.
The amount of precipitation decides the type of vegetation found in that area.So the area having trees would be having more precipitation as compared to the area having prairie grass.
the answer is 3,190,000 kcals
The two cells fuze it's called fertilization. it produces 46 chromosomes twice the amount found in gamete than the fertilized egg is now called a zygote and now has the right DANA needed for a human development