Select all that apply: Which of the following are used to describe ecosystem diversity:

A. all extinct organisms

B. all abiotic factors

C. all biotic factors

D. genetic engineering

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

The ph is the a.independent variable b.the dependent variable c.control group

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.