There are three types of fossil fuels: Oil, coal and gas.
Let's look into their formation one by one:
Oil: Dead plankton such as microorganisms and plants was buried under the sea million years ago, it accumulate over time to become oil, also known as petroleum,
Coal: Plants were dead and broken down by bacteria over time, carbon dioxide and methane were produced. After million years, the dead flora accumulated to become peat and undergone compaction, becoming coal.
Gas: This is formed along oil, and again produced by dead organisms. It is mostly formed during decomposition, and mostly made up of methane.
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Answer:
human population
Explanation:
I would say this because almost every root problem comes from humans
If the box is going down it will accelerate faster
Answer:
Spirit and Opportunity were sent to Mars to find more clues about the history of water there and see if the Red Planet could ever have supported life.
Explanation:
Both rovers measured the type and abundance of iron-bearing minerals, some of which are associated with water-driven processes. In this way, Opportunity found the mineral jarosite and Spirit found the mineral goethite. The rovers measured chemical elements, some of which are needed for life, in rocks and soils.
With data from the rovers, mission scientists have reconstructed an ancient past when Mars was awash in water. Spirit and Opportunity found evidence for past wet conditions that could have supported microbial life.
Spirit and Opportunity were sent to Mars to find more clues about the history of water there and see if the Red Planet could ever have supported life. To do this, scientists sent the two rovers to two different landing sites. The rovers landed on opposite sides of the planet.
