Which phrase best describes biodiversity? A:the amount of available energy in an ecosystem
B: the number of species in an ecosystem
C:the number of individuals in an ecosystem
D: the amount of biomass in an ecosystem

What does the positioning of transcription factors determine?

Which of these is not an obstical to the future of space exploration? fundingresearch ideas technologytime

Need ! will give 20 points! what are two ways that diatoms differ from slime molds? the external coverings of diatoms are made up of (silica, chitin or peptidoglycan), while slime molds have cell walls containing (silica, peptidoglycan or chitin). diatoms are (chemoheterotrophs, photoautotrophs or chemoautotrophs) because they make food through photosynthesis, while slime molds are (heterotrophs, phototrophs or autotrophs) because they eat decaying plant matter.