Photosynthesis altered earth's ancient atmosphere through the production of oxygen, which allowed for the evolution of animal life. This is an example of simultaneous coevolution of earth's systems and life on earth.
A False
B True

Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream? the ability to attract prey by glowingextra gills, for oxygen extractionthe ability to grow largerextra fat, for warmth

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.

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