Which of the following species is a K-selected species A. redwoodtrees B. fruits flies C. algae D. grasshoppers

Which of these is most likely to have a harmful effect on water quality? a. having water laws and regulations b. using chemical indicators to check water quality c. treating sewage to kill pathogens d. letting pollutants wash out to sea

Why would the y chromosome be unlikely to contain any of the genes that are absolutely necessary for survival?

Mario performed an experiment to determine if photosynthesis was affected by the amount of light that a plant received. The data from his experiment are shown in the table below. What could he have done to increase the validity of his data?

When performing rescue breathing be sure to always blank the head before performing breaths?

Which statements describe ways that science meets society's needs? Check all that apply A scientists investigate a new way to clean up spilled oil on land B scientist developed a procedure to collect water samples for experiments C scientist improve

What is the main purpose of the organ system shown above

The formation of hurricanes, storms, and other weather events require energy. The original energy source for all of these events is which type of energy? A) wind energy. B) solar energy. C) Nuclear fission. Eliminate D) geothermal energy.

The female portion of the flower is the A. Sepal B. Filament C. Carpel D. Stamen

Is there any solid scientific evidence that humans have been cloned?

How many chromosomes do chickens have