What do the two arrows in the diagram most likely represent?
a. radiation
b. photosynthesis
c. cellular respiration
d. energy conversions

The right answer is energy conversion.

In the image we observe a plant producing energy in the form of carbohydrates thanks to photosynthesis, then the caterpillar will eat it and recover its energy (which its carbohydrates). then this insect will be eaten by the frog and will recover its energy in the form of carbohydrates (and also proteins), the same thing with the snake and the bird.

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

amber has allowed scientists to study dna that has been preserved over millions of years.