The single most deadly entity on the planet is the
O virus
O bacteria
O bacteriaphage
Ophage
both a and be
O both c and d
None of the above

The single most deadly entity on the planet is the virus

Explanation:

Virus is the most deadliest microorganism as a result of their replication factor and ability to change protein coat which resist drug therapy on it.  Also the time taken for the replication is lesser and rapid.

the answer is sex-linked recessive.

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds