| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.39 |
| Score | 0% | 68% |
A biological community of interacting organisms and their physical environment is known as:
biome |
|
ecosystem |
|
population |
|
community |
An ecosystem is a biological community of interacting organisms and their physical environment. This includes both the biotic (living) and abiotic (non-living).
The angle of reflection is equal to which the following?
focal point |
|
90° |
|
angle of incidence |
|
refractive index |
The law of reflection specifies how waves, including light waves, bounce off of surfaces. Specifically, the angle of incidence of the approaching wave is equal to the angle of reflection of the reflected wave as measured from a line perpendicular (90°) to the surface.
Which of these is matter than cannot be separated into different types of matter by ordinary chemical methods?
element |
|
compound |
|
atom |
|
molecule |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.
__________ is caused by a lack of iron in the diet.
shingles |
|
anemia |
|
diabetes |
|
scurvy |
Anemia, which may cause weakness, dizziness, and headaches is caused by a lack of iron in the diet.
Earth's troposphere layer is which of the following?
hottest |
|
farthest from the surface |
|
closest to the surface |
|
coldest |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.