Which ecosystem contains 32% of the world's producers? a. terrestrial ecosystem b. freshwater ecosystem c. aquatic ecosystem d. marine ecosystem

What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds

Which of these best describes wde by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

Explain why the plants cortex would serve as the best food source for animals