| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.87 |
| Score | 0% | 57% |
In the foood chain, producers serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through:
chemosynthesis |
|
photosynthesis |
|
autotrophs |
|
decomposition |
Producers (autotrophs) serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis
50°F is how many °C?
-10 |
|
10 |
|
58 |
|
122 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (50 - 32)\)
\(C° = {5 \over 9} (18)\)
\(C° = {90 \over 9}\)
\(C° = 10\)
Which of the following describes how a person's genes express themselves in physical characteristics?
genotype |
|
DNA |
|
phenotype |
|
chromotype |
A person's genotype is their genetic makeup and includes both dominant and recessive alleles. Phenotype is how the genes express themselves in physical characteristics.
When the clouds become too saturated with water, the water is released as precipitation in the form of:
rain |
|
ice |
|
snow or ice |
|
snow |
Rising into the atmosphere, the water condenses into clouds. When the clouds become too saturated with water, the water is released as snow or ice precipitation which may warm as it falls to reach Earth as rain.
Water freezing or boiling is an example of which of the following?
cooling |
|
phase transition |
|
heating |
|
sublimation |
A substance undergoes a phase transition when it moves from one state of matter to another, for example, when water freezes or boils.