Answer:
Because in 1900s more revolutions took place and more pollution was done.
plz mark me as brainliest.
The answer is A: epithelial tissue lines the surface of blood vessels and organs so you can't really cut off tis blood supply
Answer: Tidaling
Explanation:
It is rise and fall of water in water-seal chamber, used to determine the degree of re expansion of the lungs. It reduction shows the lungs reexpands.
However, with respiratory efforts it is normal.
Explanation:
The effect of water stress on biomass accumulation is it effects the export of photoassimilates from leaves in both species
Answer:
A hypothesis is an educated guess that is made before research takes place. A theory is an explanation of the natural world and the universe. It explains facts that have already been proven true and is supported by data. A theory can be repeatedly tested and verified, and if proven true, makes the theory even stronger. Even if the theory is proven false, it is simply modified. This is why theories are much more reliable than hypotheses.