What event triggers the development of an embryo in an ovule of seed plants?

What is the purpose of nectar production in the flowers of angiosperms?

All of the following are plant strategies to avoid excessive water loss through the stomata, EXCEPT:

Once CO2 has been taken up through the stomata, the gas is readily absorbed into the ____ cells in the leaf.

Below is a diagram of the vapor compression cycle. Below the diagram, please name each part of the cycle AND write a brief description of what happens to the refrigerant in that part of the cycle.

A three phase motor is rated for 50W at 480v. What amperage would the motor pull at full load? (2 points for math, 1 point for correct answer, round to the nearest tenth.)

A deterrent is defined as:

Question C: What would happen to the cooling capacity if the delta T across the coils changed from 20F to 10F?

Define the acronyms below.  CRAH CRAC WSE ASE

Question A: How many tiles would be needed to cool 18kW?