Which of these is a positive effect of climate change on organisms?

O

A. Reduces atmospheric oxygen

O

B. Provides new habitats

O

C. Reduces niche size

O

D. Increases ocean acidity

SUBMIT

Which organism is the producer in this food web? 7th grade question. a) arthropods b) birds c) fungi d) plants

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?