A leaf falls from a tree and lands on the ground. Through time, bugs and bacteria consume the leaf. Which of the following statements regarding this scenario is true?
A) Through the process of digestion, the bugs and bacteria have created new matter that did not exist before.
B) The organic material that made up the leaf has been removed from that ecosystem.
C) The decomposers are able to use all of the energy that the plant's leaf obtained from sunlight using photosynthesis.
D) The organic materials in the leaf have been recycled and released back into the soil.
E.) The law of conservation of matter says that the amount of matter stays constant as it is recycled in nutrient cycles and ecosystems.
E.) The law of conservation of matter says that the amount of matter stays constant as it is recycled in nutrient cycles and ecosystems.
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Radom National Park in South Sudan is an example of ________ typified by perennial tall grasses, about 10–49 percent tree cover to areas of open grassland interspersed with small trees
A) steppe B) desert C) rainforest D) savanna
The upper boundary of the aphotic zone is determined by the depth of solar light penetration.
Answer the following statement true (T) or false (F)
A population of bats evolves because organisms from a separate bat population move into the population. This mechanism of evolution is known as
A) natural selection. B) mutation pressure. C) genetic drift. D) gene flow.
Studies reveal that during colder glacial periods, CO2 levels were lower than during warmer
interglacial periods. a. true b. false