Answer:
polynucleotide "carbon" sugar so I would say B or D
Explanation:
<span>Changes in solar activity have been quite impactful in regards to the changes in the global climate, and the extremities experienced in weather. Solar activity has been a greater impact on the planet's weather due to the vulnerability of our atmosphere as a result of environmental pollution.</span>
The purpose of growing cancer cells in a laboratory is to examine
medicinal treatments before giving them to patients. Cancer
cells are cells that generate and split at a speedy and loose speed.
Even though cancer cells are frequently generated in the body, the illness
known as cancer only happens when immune cells (chiefly
natural killer cells) is unsuccessful to identify and/or terminate them.
Any no live no part of the environment, such as sunlight, heat, precipitation, humidity, wind or water currents, soil type, and so on.