The streams and rivers in the drainage basins were the prairies are converted into farm land are mostly affected by the agriculture and its needs, as well as its consequences.
The agriculture demands water for irrigation, and most of this water comes from the streams and rivers, so that contributes to lowering of the water levels of the streams and rivers.
The agriculture also causes damage to the streams and rivers by polluting them. Namely, the pesticides, herbicides, and fungicides that are used for protection of the plants, partially end up in the low groundwater's, and in general, these waters are connected to the streams and rivers, so the pollutants end up in them, and that affects the biodiversity in them very badly.
Answer:
it d
Explanation:
B) are heterotrophs.
C) consume organisms located above them.
D) are heterotrophic, primary consumers.
The base of the pyramid is built from organisms that are primarily autotrophs, which is option A, as autotrophs are organisms that produce their own food using energy from the sun or from inorganic substances, such as certain types of bacteria that use chemosynthesis.
The base of the pyramid in an ecological pyramid is built from organisms that are primarily autotrophs. Autotrophs are organisms that are capable of producing their own food using energy from the sun or from inorganic compounds. They are also known as primary producers, and they form the base of the food chain in most ecosystems. Examples of autotrophs include plants, algae, and some bacteria. As the base of the pyramid, autotrophs support all other organisms in the ecosystem as they provide the energy and nutrients necessary for their survival.
Hence, the base of the pyramid is built from organisms that are primarily autotrophs, which is option A, as autotrophs are organisms that produce their own food using energy from the sun or from inorganic substances, such as certain types of bacteria that use chemosynthesis.
Learn more about the autotrophs here.
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b. stabilizing selection
c. a mechanism of evolution
d. directional selection
Regular distribution is observed for many organisms due to _______.
a. the need to maximize exposure to sunlight
b. the need to avoid predators
c. interactions between individuals
d. the plentiful availability of water
Natural selection is the differences in survival and reproduction as the consequence of differences in phenotypes. According to Darwin's theory of evolution, natural selection is the only factor that affects a frequency of different variations and it is the only mechanism of evolution.
Q2. The answer is c. interactions between individuals.
Organisms interact with other organisms or abiotic factors in some system. The interaction between individuals affects their regular distribution. For example, if two groups are in competition for resources, to maximize resource utilization, they will probably live in different areas or will defend territory. Also, some symbiotic organisms are expect to be distributed similarly.
Answer:
Questions 1 & 2 Are C
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B. their digestive structures.
C. their cellular structures.
D. how they reproduce.
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A
displacement
B
distance
C
frame of reference
D
graph
Answer:
Correct answer is displacement. (A)
Explanation:
You can describe the motion of an object by its position, speed, direction, and acceleration. An object is moving if its position relative to a fixed point is changing. Even things that appear to be at rest move.