Answer:
Energy drives the cycling of matter within and between systems. Energy drives the cycling of matter within and between systems in aerobic and anaerobic conditions. Photosynthesis and cellular respiration (including anaerobic processes) provide most of the energy for life processes.
The Central Nervous system is made out of spinal cords that connect to the brain.
Weather patterns and soil conditions.
In everyday life, a "theory" means a hunch, or a figure. In science a theory is the demonstrated consequence of a few trials. i.e. nuclear theory... we realize that molecules exist and that everything is made of iotas, yet in science the expression "law" is not utilized as a part of the case that ensuing confirmation ever surfaced to make a superior or more exact theory.
Correct answer: Always parasitic, contains DNA and RNA, cannot reproduce on their own
A virus is a small microscopic parasite that cannot reproduce on their own, it can only replicate them self by hijacking the host machinery. Most of the viruses contain either DNA or RNA as the genetic material.
There are many viruses that are known to cause diseases to the human, one of the common virus is an influenza virus that causes flu. other example includes Ebola, Hepatitis, Polio virus
