HELPPP Which type of feather gives the bird its color?
down
barb
contour
flight

Which codon is the code for the amino acid histidine (his)?

How will you manage your time to accomplish the necessary tasks both on the job and at home?

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos