A forest ecosystem can support a limited number of bears. This is because...
Question 3 options:

bears hibernate during the winter.

the base of the food chain is seasonal.

available energy is lost from one trophic level to the next.

light that supports photosynthesis is limited during certain times of the year.

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Will mark you as ! keiko’s teacher was discussing the theory of endosymbiosis. she asked keiko to mark the organelles in the diagram that most closely resembled prokaryotes. which organelles should keiko mark? * the first image is the question and the second image is some information to you answer the !