How do primary producers provide energy for the food chain?
A. They break down organic molecules into inorganic elements.
B. They make their own organic molecules via photo- or chemosynthesis.
C. They receive energy from secondary consumers.
D. They pass on organic substances from primary consumers.
B. They make their own organic molecules via photo- or chemosynthesis.
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If parents with genotypes Gg have one child with a recessive genetic disorder, gg, what is the chance that their second child will develop the genetic disorder?
A. 15% B. 25% C. 45% D. 35%
A grassland biome
A. consists of mostly coniferous trees. B. has nutrient-rich soil. C. has a long growing season. D. is warm and dry. E. consists of moss and lichen.
how many virus particles per cell does "serum hep" provide?
What will be an ideal response?
What type of life cycle is observed in plants and some algae?
a. alteration of generations b. alteration of species c. gametophyte and sporophyte generations d. zygotic life cycle e. gametic life cycle