False. is the correct answer
Answer: nitrogen fixing bacteria
Explanation:
Nitrogen in the forms of nitrates, nitrites and ammonia are essential for the growth of the plants. Nitrogen present in the atmosphere is fixed in the soil by the nitrogen fixing bacteria. As plants cannot absorb nitrogen from the air. The bacteria convert atmospheric nitrogen into inorganic forms such as nitrates, nitrites and ammonia which are directly absorbed by the plants by their roots.
The scenario that is representative of how agricultural practices can affect the environment is increased oxygen levels in a pond due to fertilizer runoff. Therefore, option A is correct.
Agriculture has a significant impact on the environment, both favorably and unfavorably. It can cause deforestation, water pollution, soil erosion, and climate change. Moreover, it can aid with CO₂ reduction, air quality improvement, wildlife habitat creation, and food production.
Agriculture can have significant adverse consequences on the environment, such as soil, water, and air pollution, but it can also have beneficial effects, such as absorbing greenhouse gases in crops and soils or lowering flood risks by employing specialized agricultural methods.
Thus, the scenario that is representative of how agricultural practices can affect the environment is increased oxygen levels in a pond due to fertilizer runoff. Therefore, option A is correct.
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Your question is incomplete, most probably the full question is this:
Which of the following scenarios is representative of how agricultural practices can affect the environment?
a. increased oxygen levels in a pond due to fertilizer runoff
b. sediment accumulation in a body of water near a farm
c. soil compaction caused by tillage
d. increased plant growth caused by the application of herbicides
Answer:
The correct answer to the question, 'which of the following scenarios is representative of how agricultural practice can affect the environment' is A. Option A is chosen because it is the only option that refer to another environment which is different from that of the farm. When fertilizers are washed to nearby ponds as a result of erosion, it causes a lot of negative changes in the pond. For instance, the chemicals in the fertilizer can be poisonous to some of the smaller organisms in the pond, this will result in the death of these organisms. Fertilizer run off can also cause excessive growth of plants such as algae in the pond. This may block out the light necessary for the survival of the organisms in the ponds and may also reduce the amount of oxygen available to the organisms living in the pond.
Explanation:
Answer:
This is the correct order of what it suppose to be!
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B. Oceanic crust is denser than continental crust, causing oceanic crust to sink down below continental crust.
C. Continental crust is denser than oceanic crust, causing oceanic crust to be deflected down into Earth's mantle.
D. Continental crust is made of harder metamorphic and sedimentary rocks, which causes oceanic crust to break when the two types of crust collide.
Answer: -
b. Oceanic crust is denser than continental crust, causing oceanic crust to sink down below continental crust.
Explanation:-
Oceanic crust is denser than the continental crust as it has iron, basalt, magnesium. On the other hand continental crust consists of granite and aluminium. The rocks that have oceanic crust are thus denser than the rocks that have continental crust. Continental crust is considerable thicker.
Due to the difference in the density when oceanic crust and continental crust meet at the subduction zones, the oceanic crust is sub ducted back into the mantle. Continental crust is the oldest part and underlies beneath the continent.
A layer of sedimentary and metamorphic rocks too form on the tops of the continental crust.On the basis of the above explanation, Oceanic crust is denser than continental crust, causing oceanic crust to sink down below continental crust is the correct option.
Land Plants
Bacteria
Protists
Question:
Place the above organisms in order of when they first appeared on Earth. Describe two (2) of the methods used by scientists to arrive at this conclusion.