Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
What is the biogeochemical cycle? |
the exchange of matter through the biosphere. |
|
|
What are the parts of the biosphere? |
the parts of earth that contain life, such as land and water. |
|
|
How much of Earth's water is saltwater and freshwater? |
97% saltwater. 3% freshwater. |
|
|
Where is Earth's water found? |
69% in glaciers. 30% in groundwater. 1% in lakes and rivers. |
|
|
What are the three ways that organisms migrate? |
Uniform dispersion, clumped dispersion, and random dispersion. |
|
|
Why is biodiversity important? |
because it determines the stability and health of the biosphere. |
|
|
What is in a cell? |
nucleus, mitochondria, golgi apparatus, lyosome, centriole, cell wall, cell membrane, chloroplast, and cytoplasm. |
|
|
What is in a nucleus? |
Chromatin, nuclear envelope, nuclear pore, and a nucleolus. |
|
|
How do base pairs form? |
by a purine base bonding with a pyrimidine base to form AT and CG pairs. |
|
|
|
|
