What biological molecule contains a large amount of the element nitrogen? a) carbohydrates b) lipids c) proteins d) starches

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity

Biology ! the conversion of inorganic carbon to organic carbon by plants during photosynthesis is known as _[blank]_. filtration immigration reabsorption primary production

Ascientist is designing an investigation to study the impact of invasive bird populations on local, native bird populations at backyard bird feeders. what population is most likely to be a control group for the investigation? amount of food number of bird feeders invasive bird populations local backyard birdfeeders without food