C. Reproductive because the circulatory assists the runner in pumping blood into his body, his muscular is the muscles the runner uses to run, and the skeletal supports the muscles and the rest of the body while he is running. The reproductive system isn't actively being used during this time
Answer:
Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Iron and steel rust when they come into contact with water and oxygen – both are needed for rusting to occur.
Explanation:
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Biological Organisms: Living things that are capable of reacting to stimuli, reproduction, growth, and homeostasis. Organisms are classified by taxonomy into specified groups such as the multicellular animals, plants, and fungi; or unicellular microorganisms such as a protists, bacteria, and archaea.
Answer:
This scenario has been discovered and studied in slime molds.
Explanation:
The green beard effect is one of the three fundamental mechanisms of kin selection. In the 1960s, W.D. Hamilton in his work on the evolution of altruism brought it into the highlight. The other two mechanisms are kin discrimination and population viscosity. Green-beard effect functions even when the altruist and her recipients are not genealogical kin.
Around the fall equinox and spring equinox the temperatures are more moderate because the Earth is at a position where it is neither in its closest, not furthest position from the Sun, the speed of the Earth slightly decreases as the spring equinox is nearing, so it starts to warm up, and slightly accelerates when the autumn equinox is nearing, so it starts to cool off. So to put it simple, these are the periods where the Earth is not in a position and speed where the Earth experiences extremes, but instead these are the transitional periods, so they are much more moderate than the extremes.
