Determine if the following statement is true or false and why. “Primary and Secondary Consumers lose about 30% of the energy they absorb from food as heat.” A. False, it should read “Primary Consumers lose about 5% of the energy they absorb from food as heat, while Secondary Consumers lose 30% as heat.” B. False, it should read “Only Secondary Consumers lose about 30% of the energy they absorb from food as heat.” C. False, it should read “Primary and Secondary Consumers lose about 5% of the energy they absorb from food as heat.” D. True

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

the answer is sex-linked recessive.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.