Oxygen Cycle & More
What is the law that states matter is not created or destroyed when it changes form?
Answer: Law of Conservation of Mass
$100: Which process describes water vapor changing into liquid water?
Condensation
$100: How do phytoplankton contribute to the carbon cycle?
Over time their fossilized skeletons release carbon into the air in the form of carbon dioxide
Which organisms help convert atmospheric nitrogen into usable compounds?
Answer: Nitrogen-fixing bacteria
$200: What is the main source of oxygen in the atmosphere?
Photosynthesis
$200: What are the three main processes involved in the water cycle?
Answer: Evaporation, condensation, precipitation
What role do decomposers play in the carbon cycle?
They break down dead organisms, returning carbon to the soil
Why is nitrogen important for living organisms?
Answer: It is essential for the production of proteins
$300: during decomposition in the carbon cycle carbon compounds return to soil and ____________ is released
Carbon dioxide
$300: What percentage of Earth's water is found in the oceans?
97%
How does matter move through the environment?
in cycles
_______________________ is The process of converting atmospheric nitrogen into usable compounds
nitrogen fixation
$400: What form of nitrogen can plants and animals NOT use?
atmospheric form
What are the 4 forms of precipitation?
rain
snow
hail
sleet
How do humans primarily obtain carbon?
from their food
What molecule contains genetic information and requires nitrogen?
DNA
What is the process that changes atmospheric nitrogen into usable compounds?
nitrogen fixation
What process in plants gives off moisture as part of the water cycle?
transpiration
How do plants primarily obtain carbon?
atmosphere and water