1) The cell membrane surrounds the cytoplasm and prevents it from spreading out of the cell
2) Albumin which is a protein transport free fatty acids, which result from lipid digestion, in the blood stream by binding to it
3) The nucleus contains the chromosomes which carry the DNA on them
Radio waves need a medium to transfer.
There are plenty of plants producing oxygen by photosynthesis.
Also, human's only use 5% of the oxygen in the air in respiration, there is 21% in the air.
Answer:
D
Explanation:
A geometric progression is multiplication by a number. In this case, it is 3.
If you take 4, multiply it by 3, you get 12. Multiply 12 by 3, you get 36. And so on.
