Fact 1: Birds are endothermic tetrapod vertebrates. Fact 2: Class Aves is for the birds, literally. Given the two facts above, answer the question "What kind of animal would be an endothermic tetrapod vertebrate?" with the following options: - animals in the class aves - barks and snarls - passenger pigeons - Something that is self-aware - Generating heat - retaining heat - absorb light energy - it keeps an organism warm
animals in the class aves

Fact 1: Waxy leaves are used for storing water by some plants. Fact 2: Waxy leaves keep the plant from drying out. Given the two facts above, answer the question "Leaves that keep the plant from what are used for storing water by some plants?" with the following options: - drying out - absorbing liquid - bacteria - cold air - staying damp - dormant state - toxins - keeping moist
drying out

Q: Fact 1: Amutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring. Fact 2: Animals that reproduce sexually produce sex cells, or gametes. Given the two facts above, answer the question "a mutation in the _ of a parent can cause a new trait to appear in the parent 's offspring" with the following options: - eggs - courtship - mitochondria - alleles - pollen - gametes - ATP - hormones
A: gametes

Question: Fact 1: Lakes are formed by precipitation and runoff. Fact 2: Runoff water is wasted water. Given the two facts above, answer the question "Lakes are formed by precipitation and what?" with the following options: - scarce resources - storing water - wasted water - body water - Bodily water - erosion - flooding - reduced heat
Answer: wasted water

*Question*
Fact 1: Friction causes an object to lose energy. Fact 2: Friction occurs when two substances rub together. Given the two facts above, answer the question "what causes an object to lose energy" with the following options: - wind and erosion - pressure differences. - refract or absorb. - heat is produced - electron transport - depress neuronal excitability - degrees Celsius - 2 substances rubbing together
**Answer**
2 substances rubbing together

Q: Fact 1: Skin is used for breathing air by frogs. Fact 2: An apathetic frog is probably a sick frog. Given the two facts above, answer the question "What largest organ can cause sickness? " with the following options: - Heart - lungs - immune - germs - mold - Skin - Liver - Stomach
A: Skin