| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.48 |
| Score | 0% | 70% |
Which of the following members of the food chain are most alike?
herbivores and autotrophs |
|
producers and tertiary consumers |
|
primary consumers and omnivores |
|
scavengers and decomposers |
Like decomposers, scavengers also break down the dead bodies of plants and animals into simple nutrients. The difference is that scavengers operate on much larger refuse and dead animals (carrion). Decomposers then consume the much smaller particles left over by the scavengers.
Which of blood component allows blood to clot?
platelets |
|
red blood cells |
|
plasma |
|
white blood cells |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.
All surface water is part of the:
lithosphere |
|
geosphere |
|
hydrosphere |
|
atmosphere |
The biosphere is the global ecological system integrating all living beings and their relationships. This includes their interactions with the lithosphere (the rigid outer part of the earth, consisting of the crust and upper mantle), hydrosphere (all surface water), and atmosphere (the envelope of gases surrounding the planet).
A transition zone between two air masses is called:
front |
|
boundary |
|
thunderstorm |
|
fog |
An air mass is a large body of air that has similar moisture (density) and temperature characteristics. A front is a transition zone between two air masses.
In the metric system, what prefix represents 10-3?
kilo |
|
centi |
|
milli |
|
mega |
In the metric system, milli is the prefix for 10-3.