20 which statement is true about biomes? biomes don’t contain ecosystems. b. biomes can have only one ecosystem. c. biomes are smaller areas within ecosystems. d. biomes are determined by climate zones.

What is the compliment dna strand to the following sequence: ttgactaggcta

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.