In modern classification system, unicellular organisms that contain chloroplasts and a nucleus would be considered; A) annelids B) protists C) archaea D) chordates

Which of the following is an example of an object with elastic potential energy? a. a bow knocked back with an arrow a stretched rubber band b. a compressed basketball all of the above

One major biotic factor that affects the health of coral reefs is/are

If i explore two oceanic plates at a convergent boundary, i will observe: A. faults B. ocean formation C. island chains D. seafloor spreading

Which list shows stars in order of increasing temperature?

The bacterial lac operon is switched on when?

In a population, when the birthrate becomes higher than the death rate, the population's growth rate A) decreases. B) increases. C) slows to a stop. Eliminate D) levels off and remains constant.

In spermatophytes, the plant embryo is encased in a seed. True False

Which statement best explains why the level of ATP in skeletal muscles changes during exercise? Adenosine and phosphate in ATP are destroyed by the muscles. Waste ATP accumulates in the blood stream rather than in the muscles.

How many braincells do I have?

Which of the following is not being undertaken to reduce the risks to human health from pesticides?