An increasing salt content in the oceans of the world is a good example of

1) one-way change

2) reversible change

3) cyclical change

4) repetitive change

Why does crossing over rarely occur in mitosis?

Which of the following best explains what would happen if there were no primary consumers in an ecosystem? The population of producers would decrease, while less energy would be transferred from autotrophs to heterotrophs.

Compare the number of chromosomes present in the offspring with the number of chromosomes present in the parent organism in the process of cloning

Female gametophytes in angiosperms are hidden and protected. Where are they found, and what are they called?

What is tissue respiration

In 1883, a catastrophic event caused climate change, a massive tidal wave, and violently red sunsets. Which event below would be the most likely to have caused the listed effects in 1883? A. a volcanic eruption B. a typhoon C. a hurricane D.

What kind of microbe causes HIV?

Which of the following substances would NOT be found in significant amounts in the extracellular matrix of the illustrated areolar connective tissue? A. collagen B. elastin C. keratin D. proteoglycan

What could be one possible effect on human health due to an oil spill? A. Greenhouse gases being emitted into our atmosphere from the vessel can have a negative impact on our air quality. B.

What condition would an increase in bicarbonate ion lead to?