Answer:
D. Plastic sheeting, ultraviolet lights, dams, mechanical equipment and pesticides
Explanation:
The agriculture has changed significantly in the past couple of centuries. With the start of the industrial revolution, the agriculture was gaining more and more products and technologies to make it make easier for working, safer from pests, providing artificial conditions for the plants, and having higher quality and quantity. The mechanical equipment made the work much easier, cheaper, quicker, and more efficient, replacing lot of labor force. The pesticides have contributed to minimizing the effects of the pests. The dams are providing water for the plants where there's not enough in certain periods of the year. The plastic sheeting manages to stop weeds from growing, keeping higher temperature and moist for the plants, making them grow better and quicker. Some plants do not receive enough sunlight, or have to grown in regulated conditions, so the ultraviolet lights provide the needed light for them to prosper and perform photosynthesis.
A radioactive microwave background.
Answer:
Mangroves
Mangroves are defined as assemblages of salt tolerant trees and shrubs that grow in the intertidal regions of the tropical and subtropical coastlines. They grow luxuriantly in the places where freshwater mixes with seawater and where sediment is composed of accumulated deposits of mud.
The plate labeled with A is the South American plate, the one labeled with B is the African plate, and the one labeled with C is the Australian plate.
Explanation:
The three plates that are marked on this map are the South American, African, and Australian (Indo-Australian) plates. All of these three plates have a core of continental crust which is surrounded by oceanic crust. The three continents on these plates are South America, Africa, and Australia (plus the subcontinent of India). Despite the three continents being separated by oceans between them at present, it was not like that throughout the past.
- In the distant past these three continents were merged, being part of Gondwanaland, accompanied by India and Antarctica as well.
- Divergent boundaries arose between them though, so they started moving apart and gradually formed new continents.
- As it stands, there is no evidence that these plates will merge again in the next few million years, as the South American plate moves west, the African is actually splitting into two plates, and the Australian is moving toward northeast.
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