Aresearcher observing an ecosystem describes the amount of sunlight, precipitation and type of soil present. which factors is the researcher most likely describing?
biotic factors in a forest.
biotic factors in a tundra.
abiotic factors in a prairie.
abiotic factors in a coral reef.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

that is wrong, its not thymus.