| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
Which of the following states of matter exists at the highest temperature?
none of these |
|
gas |
|
liquid |
|
solid |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
Which of the following is not part of the carbon cycle?
decomposition |
|
respiration |
|
precipitation |
|
photosynthesis |
The carbon cycle represents the ciruit of carbon through Earth's ecosystem. Carbon dioxide (CO2) in the atmosphere is absorbed by plants through photosynthesis. Plants then die and release carbon back into the atmosphere during decomposition or are eaten by animals who breathe (respiration) the carbon into the atmosphere they exhale and produce waste which also releases carbon as it decays.
In the food chain, omnivores may be which of the following?
secondary consumers or scavengers |
|
primary or tertiary consumers |
|
secondary or tertiary consumers |
|
primary or secondary consumers |
Secondary or tertiary consumers may be omnivores.
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
raise, decrease |
|
decrease, stabilize |
|
decrease, raise |
|
stabilize, raise |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
During digestion, the kidneys filter substances from the blood. Which of the following is not filtered by the kidneys?
salt |
|
fats |
|
water |
|
minerals |
Chemical waste like excess water, minerals, and salt are filtered from the blood by the kidneys and secreted into the urine. Urine is transported from the kidneys to the bladder through ureters.