NYSTCE CST 245 EXAMS SET OF FULL
QUESTIONS AND ANSWERS FOR A
GUARANTEED GRADE A+ IN 2026.
⫸ ecosystem. Ans: A biological community of interacting organisms
and their physical environment.
⫸ air. Ans: -mixture of oxygen and co2
- trees absorb CO2 and release O2
- animals release methane (bad for air)
- less trees = increase in CO2 and decrease in O2 in the air
⫸ photosynthesis. Ans: -Conversion of light energy from the sun into
chemical energy.'
'- use sunlight to synthesize foods from carbon dioxide and water
- plants take energy from the sun and spread hydrogen into its parts,
helping it to create sugar, water, and oxygen.
- invovles the green pigment chlorophyll
⫸ synthesize. Ans: To combine; to blend
⫸ unknown plant species. Ans: unknown trees are usually weeds that
usually need less nutrients and sunlight to survive and can ruin other
,growing gardens. These weeds usually strangle the tree and prevent it
from getting sunlight and nutrients to survive.
⫸ Nutrient life cycle. Ans: 1. nutrient present in the soil
2. nutrients consumed by tree and shrub
3. nutrients released back into soil
4. soil breaks down waste
⫸ metamorphisis. Ans: in an insect or amphibian- the process of
transformation from an immature form to an adult in two or more
distinct stages
⫸ 4 steps sceintific study. Ans: 1. observation
2, hypothesis
3. experiment
4. conclusion
⫸ symbiosis. Ans: -a mutually beneficial relationship between two
different organisms
- another way that animals adapt to their environment
- example: the myna birds eat the fleas off the body of the rhino which
helps the rhino stay healthy. Rhino helps the birds get food. the bird
helps the rhino by getting rid of insects . However not a true
relationship because the rhino could get hurt from its skin getting
pecked at.
, - example : termites and gut bacteria . Bacteria lives off the food in
the termites gut.. Bacteria helps termites process the wood fiber.
Termites provide food for bacteria.
⫸ tectonic plates. Ans: Large movable plates under the Earth's
surface. can cause earthquakes and volcanoes
⫸ weathering. Ans: The breaking down of rocks and other materials
on the Earth's surface.
-weathering can also be caused by bacteria . Discovered by geologist
by drilling underground and discovered how. bacterial weathering
impacts the land
⫸ erosion. Ans: -The process by which wind, water, ice, or gravity
transports soil and sediment from one location to another
- water and wind erosion will change the surface of rock faces slowly
over years
-areas that experience drought sill experience erosion from wind
- *note that erosion is not a type of weathering but is the process that
removes the products of weathering
QUESTIONS AND ANSWERS FOR A
GUARANTEED GRADE A+ IN 2026.
⫸ ecosystem. Ans: A biological community of interacting organisms
and their physical environment.
⫸ air. Ans: -mixture of oxygen and co2
- trees absorb CO2 and release O2
- animals release methane (bad for air)
- less trees = increase in CO2 and decrease in O2 in the air
⫸ photosynthesis. Ans: -Conversion of light energy from the sun into
chemical energy.'
'- use sunlight to synthesize foods from carbon dioxide and water
- plants take energy from the sun and spread hydrogen into its parts,
helping it to create sugar, water, and oxygen.
- invovles the green pigment chlorophyll
⫸ synthesize. Ans: To combine; to blend
⫸ unknown plant species. Ans: unknown trees are usually weeds that
usually need less nutrients and sunlight to survive and can ruin other
,growing gardens. These weeds usually strangle the tree and prevent it
from getting sunlight and nutrients to survive.
⫸ Nutrient life cycle. Ans: 1. nutrient present in the soil
2. nutrients consumed by tree and shrub
3. nutrients released back into soil
4. soil breaks down waste
⫸ metamorphisis. Ans: in an insect or amphibian- the process of
transformation from an immature form to an adult in two or more
distinct stages
⫸ 4 steps sceintific study. Ans: 1. observation
2, hypothesis
3. experiment
4. conclusion
⫸ symbiosis. Ans: -a mutually beneficial relationship between two
different organisms
- another way that animals adapt to their environment
- example: the myna birds eat the fleas off the body of the rhino which
helps the rhino stay healthy. Rhino helps the birds get food. the bird
helps the rhino by getting rid of insects . However not a true
relationship because the rhino could get hurt from its skin getting
pecked at.
, - example : termites and gut bacteria . Bacteria lives off the food in
the termites gut.. Bacteria helps termites process the wood fiber.
Termites provide food for bacteria.
⫸ tectonic plates. Ans: Large movable plates under the Earth's
surface. can cause earthquakes and volcanoes
⫸ weathering. Ans: The breaking down of rocks and other materials
on the Earth's surface.
-weathering can also be caused by bacteria . Discovered by geologist
by drilling underground and discovered how. bacterial weathering
impacts the land
⫸ erosion. Ans: -The process by which wind, water, ice, or gravity
transports soil and sediment from one location to another
- water and wind erosion will change the surface of rock faces slowly
over years
-areas that experience drought sill experience erosion from wind
- *note that erosion is not a type of weathering but is the process that
removes the products of weathering
