Scientists produce plants from tissue culture in the lab. the new plants are produced under sterile conditions, to produce clones of the parent plant. the new plants

a)have traits of both parents. b)are identical to the parent plant. c)are the product of sexual reproduction. d)are different traits from the parent plant.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

If an organ has six haploid chromosomes, how many chromosomes are present. 6 12

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic