Biosphere Test Flashcards
Why is the water Cycle so important? And how does the water Cycle work?
All living things need to survive, and water molecules enter the atmosphere as water vapor when they evaporate from the ocean or other bodies of water.
If algae is at the beginning of the food chain is is known as the
Producer
If you are an ecologist and you are counting the population number of a certain species in a given area, which inquiry method are you using?
Observation
A snake that eats a frog that had eaten an insect that fed on a plant is a
Tertiary consumer
Define biomass.
Total amount of living tissue within a given tropic level.
As only 10% of the energy is stored in organisms is passed on to the next trophic level, some of the remaining energy is used for life’s processes and the rest is what?
Eliminated heat
List the processes in the carbon cycle.
Photosynthesis, cellular respiration, and decomposition.
Green plants are
Producers
Deer are
Primary consumer
Nitrogen fixation is carried out primarily by what?
Bacteria
Why do organisms need nutrients?
To build tissue and carry out life essential functions.
Water can enter the atmosphere through the processes of?
Evaporation and transpiration
Living organisms require nitrogen to make __________,which are used to build proteins.
Amino acids
What do scientists classify the nitrogen, carbon and water cycles as?
Biogeochemical cycles
Plant-eating cows are called ________
Herbivores
Th chemical substances that an organisms require to live are called what?
Nutrients
What is the process by which bacteria converts nitrogen gas in the air to ammonia?
Nitrogen fixation
What is nitrogen fixation carried out primarily by?
Bacteria.
The chemical substances that an organisms requires to live are called what?
Nutrients
Explain the role of Algae in ocean food chains.
Algae is an autograph and in this particular case it’s going to be the primary producer at the base of the food chain.
Describe three basic processes of ecological research and explain them.
Observation: the first step in making an experiment and a model. It asks ecological questions.
Experimenting: can be used to test hypotheses.
Modeling: ecologists make models to gain insight into complex phenomena such as the effects of global warming.
What are some of the similarities between the carbon cycle and the nitrogen cycle?
They are both the most abundant in the atmosphere and they both involve plants to transfer the nutrients.
Plant-eating cows are called?
Herbivores
The chemical substances that an organisms requires do love are called?
Nutrients
