Which factor would scientists most likely evaluate to determine the health of a marine ecosystem?

Frequency of predation

Levels of pollution

Particulates in the air

Reproductive success of consumers

The population of mice in a local forest ecosystem has recently died out due to disease. In the past, these mice were the main predators of the forest beetles.

Which is an example of an internal stimulus? A. an increase in the amount of water available to a plant B. a decrease in oxygen levels in the blood during exercise C. a sudden change of air temperature D. an artificial light that attracts insects

Which of the following make up a plants vascular system allowing it to work as a transport system? A. it is made up of specailized tubes that move around the plant as it grows B. it is made up of specailized cells that have thick cell walls C.

Based on the composition of cell membranes, the most prominent lipids are

Which activity might a scientist do as part of the scientific process?

I'll Mark the first correct answer brainiest A construction worker is using his weight to keep a stationary stack of wooden beams from falling. If the construction worker uses 689.

Among human populations, the primary use of fresh water is for A. energy. B. drinking and cooking. C. flushing toilets. D. agriculture and industry. it's not B what is the correct answer?

Becky sometimes has terrible migraines and so tries to avoid foods containing msg. which neurotransmitter may be responsible for her migraines? gaba ach dopamine glutamate

Which part of a leaf contains all the chemicals necessary for photosynthesis?

What is the name of the microtubule-organizing center found in animal cells as an identifiable structure present during all phases of the cell cycle? centriole centrosome centromere kinetochore?