I can answer the third one:
Photosynthesis takes place in two stages<span>: light-dependent reactions and the Calvin cycle (light-independent reactions).</span>
<u>Answer:</u>
<em>Farmers definitely use the information above to plan out their crops from one year to next.</em>
<u>Explanation:</u>
Nitrogen is an essential nutrient required for healthy plant growth. Corn is an important food crop and after its cultivation the soil is depleted of its nitrogen. <em>Cultivation of any crop on soils that lack nitrogen will not yield good result.</em>
Thus the nitrogen in the soil has to be replenished. Soybean is a crop that has symbiotic bacteria living on its roots. <em>This bacteria help in fixing atmospheric nitrogen.</em> Thus the nitrogen level will get replenished.
Thus cultivating soybean on the land in the period between <em>harvest and sowing of corn would be a healthy practice that increases yield and maintains soil health. </em>
Hope this answers your question
Answer:
The total amount of carbon is constant but limited as it moves through the carbon cycle.
Explanation:
<span>The correct answer is B. Human activity. That's why it is said that global warming si not natural because it's human created. This usually means that things like deforestation or usage of fossil fuels or freon or similar things brings climactic change, usually for the worse. Other mentioned aspects are all found in nature and are not something that we can affect. </span>