The answer is global warming
Answer:
B. The population must be very large.
Explanation:
DNA and Genes are linked because dna is made up of genes in one way or another
Answer:

Plasmodesmata play roles in both cellular communication and in molecule translocation. Plant cells must work together as part of a multicellular organism (the plant); in other words, the individual cells must work to benefit the common good. Therefore, communication between cells is crucial for plant survival.
Answer:
Option 2 and 4
Explanation:
i think it is option 2 and 4 because it tells us what a character does :)