What is a gastrula?
What will be an ideal response?
An embryo that has developed three tissue layers
Biology & Microbiology
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What are the factors that make the fossil record biased and incomplete?
What will be an ideal response?
Biology & Microbiology
Algal blooms in ponds are often due to the accumulation of excess
a. phosphorus and nitrogen. b. oxygen and carbon. c. phosphorus and carbon. d. oxygen and nitrogen.
Biology & Microbiology
Asexual Reproduction
What will be an ideal response?
Biology & Microbiology
Most taxonomic groups with simple multicellular organisms never gave rise to complex multicellular descendants
A. true B. false
Biology & Microbiology