The basic unit of life is a D. cell.
D is the correct answer because although life is also made up of the other options, in the end, they are all made up of cells. A tissue is a group of specialized cells, and an organ is made up of different tissues. An organ system is a system of organs that work together.
Hope that helped you.
Answer:
Explanation:
Over the past 250 year or two and a half centuries fossil fuels have been burnt at a very fast rate to meet the various human needs. These fossil fuels contains huge amount of carbon dioxide. And when these fossil fuels are burnt in power factories, power plants, cars etc. carbon moves from the fossil to the atmosphere. And since carbon dioxide is a greenhouse gas it traps more heat and hence there is a global temperature rise.
It is estimated that every year almost five and a half billion tons of carbon is released by burning fossil fuels. And since this amount of carbon dioxide is very huge for plants to convert all of them into oxygen via photosynthesis it leads to disbalancing in the carbon cycle that is more carbon dioxide is produced than the amount can be utilized which finally leads to rise in Earth's temperature as all of the extra carbondioxide ends up in Trapping more sun light.
The underlying assumption of the Harrod-Domar growth model is that
Growth is mainly determined by capital accumulation through savings
The Harrod-Domar model is a model of economic growth.<span> According to the
Harrod-Domar model, economic growth depends on two important factors, the
saving ratio and the capital output ratio.</span>
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<span>Mutation cannot be predicted and research cannot determine when mutations will occur. However, natural selection indicates that species with the strongest traits will multiply more and live longer than their weaker counterparts. Therefore natural selection is systematic and predictable.</span>
Answer: Hope this helps you.
1. Ecologist (c)
2. Population (g)
3. Ecosystem (f)
4. Stable (e)
