The optic nerve needs a minimum of 2.00 x 10−17 J of energy to trigger a series of impulses that eventually reach the brain. How many photons of this wavelength, 6.8 LaTeX: \mu mμ m, are needed? Enter to 3 sig figs.

Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.

Explain why phospholipid molecules form a bilayer. (3 marks)

What do decomposers leave behind after getting their energy?