Which of the following is a consequence of water polluted by human sewage?

a. pathogens

b. disease vectors

c. high levels of contaminants

d. all of the above

What type of climate is irrigation mostly used in

Which taxonomic level for a given genus includes the greatest number of species?

Aquatic organisms in lakes and ponds are often able to survive the winter underneath a layer of ice, because the water underneath the ice remains liquid.

Is oxygen produced as a result of carbon fixation or of electron transport

Name two gases in the atmosphere that are essential for life

Pom Which of the following sequences best represents life's organization? O organ - tissue - cell - organ system cell - tissue - organ-organ system cell - organ - tissue - organ system cell - organ system - organ - tissue

Scientific research shows that our global climate is changing. Ocean temperatures and acidity are increasing, and the global sea level is rising. Which of the following best predicts an outcome of this global climate change in a marine ecosystem?

Which of the following is NOT a potential harmful effect on human health resulting from climate change? A. malaria B. yellow fever C. heatstroke and heat-related illnesses D. respiratory problems E. schistosomiasis

The three rocks statements below are observations of the same rock sample: - the rock has intergrown crystals from 2 to 3 millimeters in diameter - the minerals in the rock are gray feldspar, green pyroxene, and black amphibole -there are no visible

Most of cells work is carried out by___, which are made from many ___.