6. the total mass of living tissue at each trophic level
can be shown in a(an)
a. energy pyramid.
b. pyramid of numbers.
c. biomass pyramid.
d. biogeochemical cycle.

Leila has dimples because she received a gene copy from her father that coded for dimples. this means that dimples are an example of a trait that is

When plants use sunlight to make food, the energy of sunlight is

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.