Coldest point in atmosphere is?

A. Tropopause B. Mesopause C. Exopause D. None of these The top of the mesosphere, called the mesopause, is the coldest part of Earth’s atmosphere. Temperatures in the upper mesosphere fall as low as −101 °C (172 K; −150 °F), varying according to latitude and season.

Cancer can be treated by ___________?

A. Antibiotics & vaccines B. Radiotherapy & antibiotics C. Chemotherapy & radiotherapy  D. Antibiotics & Chemotherapy Cancer can be treated by surgery, chemotherapy, radiation therapy, hormonal therapy, targeted therapy (including immunotherapy such as monoclonal antibody therapy) and synthetic lethality, most commonly as a series of separate treatments (e.g. chemotherapy before surgery).