Why is a biomass and/or energy pyramid always broadest at the bottom?

What will be an ideal response?


Producers typically account for most of the biomass in a pyramid, and top carnivores contribute relatively little. Energy losses occur in the subsequent transfers between plants and each trophic level of consumers.

Biology & Microbiology

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Which of the following is the introduction of a non-mutated gene at a random location in the genome in hopes of curing a disease?

a. gene therapy b. polymerase chain reaction (PCR) c. gel electrophoresis d. recombinant DNA

Biology & Microbiology

Classes of lipids include all of the following except

a. phospholipids. b. fats. c. waxes. d. carbohydrates. e. steroids.

Biology & Microbiology

Sexual reproduction is important to the survival of a species in a changing environment because

a)sexual reproduction requires less overall energy expenditure than asexual reproduction. b)sexual reproduction produces genetically different individuals. c)sexual reproduction requires only one individual. d)sexual reproduction produces genetically-identical individuals. e)All answers are correct.

Biology & Microbiology

T or F: the right arm is ipsilateral to the right legt

What will be an ideal response?

Biology & Microbiology