Answer:
Rivers usually begin in upland areas, when rain falls on high ground and begins to flow downhill. They always flow downhill because of gravity. They then flow across the land - meandering - or going around objects such as hills or large rocks.
Explanation:
Hope this helps!
Because all organisms are made up of cells and there are different types of cells which carry different functions.
They provide half lives by radio active decay that can tell how old they are and earth also they provide analogous and and homologous structures
Oddly worded, but oxygen is mostly transported bound the the protein hemoglobin
Transfer of energy from one living to another in a food chain is called pyramid energy.
So simply we can energy pyramid shows how much energy passes from one living to another in a food chain.
Food chain always begins with autotrophs i.e. green nature (plants). Which becomes producers.
There are different types of organisms based on food habits and their environment.
