The answer is; the skeletal system and the nervous system
The skeletal system (muscle and bone) give you rigidity and enable your legs to support your weight. The muscles also act on the bone as a fulcrum allowing it possible for them to contract and make motion possible.
The nervous system is important in the coordination of movement. The brain is the center for locomotor action. This ensures you are able to place one foot in front of the other in sequence and moving your arm in concert.
This is known as the <span>a biogeochemical cycle. This is a very broad term given for any substance that cycles through biotic (biological) and abiotic compartments on Earth. These cycles are known for</span><span> carbon, oxygen, nitrogen, phosphorus, sulfur, and water. The water or hydrological cycle is arguably the most well-known cycle. Water cycles between water vapor in the clouds, rainfall, rivers lakes and ocean as well as ground water and back into water vapour. During the terrestrial phase, water also passes through plants and animals.</span>
Answer:
Chromosomal DNA is packaged inside microscopic nuclei with the help of histones. These are positively-charged proteins that strongly adhere to negatively-charged DNA and form complexes called nucleosomes. ... Nucleosomes fold up to form a 30-nanometer chromatin fiber, which forms loops averaging 300 nanometers in length.
Explanation:
Answer:
They can not live on their own
Explanation:
The main difference between cells and viruses is that viruses need another cell to infect so that they can reproduce. Cells on the other hand can reproduce on their own.
