In good-quality surface soil, approximately what percentage of the volume is made of mineral and organic matter? A. 80 percent
B. 25 percent
C. 50 percent
D. 99 percent

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. agouti x albino a) 1/2 albino, 1/2 agouti b) all agouti c) 3/4 agouti, 1/4 albino