Which of the following is true about solar radiation? (Help, I'll give brainless) ( put a "X" for which answers are correct) Thank you! (:

1. The incoming radiation getting into our atmosphere is not equal to what is leaving our atmosphere

2. The solar radiation enters our atmos as short wave radiation--high energy

3. Once the solar energy is in our atmos, the it turns into a longer wave energy that
has less energy, than what cam into our atmos.

4. Our atmos is trapping some solar energy causing global temps to increase

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum