How does energy usually flow in ecosystems?
a. from producers through the sun to consumers
b. from consumers through the sun to producers
c. from the sun through consumers to producers
d. from the sun through producers to consumers

Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what