What proportion of the earth surface is grassland

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

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.

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm