, кто хорошо знает англ Simple or Continuous.
1. The scientists watch how the changes in the organisms (to arise) gradually.
2. Species (to meet) the demands of the environment to survive?
3. A lot of biologists (to work) on the base-pairing rule.
4. New species constantly (to evolve).
5. We (to combine) the sets of nucleotide strands, so we can't go home now.
6. As it is known, this organism always (to resist) the changes of the environment