Answer:
I think the answer is A: Roots.
A) most of them formed thousands of years ago, and will take hundreds of thousands of years to renew.
Explanation:
Fossil fuels were not formed thousands of years ago and will not take hundred of thousand of years to renew.
These resources are non-renewable and they take several million of years to form.
- Fossil fuels are derived from organisms that have been buried rapidly in basins of deposition.
- Rapid burial cuts them off from the oxic environment that degrades them to lose their carbon matter.
- In turn, they turn to organic matter known as kerogen.
- With increasing burial they form hydrocarbons.
- Burial cause temperature and pressure to rise.
- The process takes several millions of years to form.
- No known fossil fuel reserve is several thousands of years.
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Answer:
Photosynthetic lamellae
Explanation:
The cyanobacteria were the first successful photosynthetic cells present on the Earth which were able to convert the light energy into the chemical energy.
The endosymbiosis theory suggested that these cyanobacteria were engulfed by the eukaryotes and the cyanobacteria get transformed into the chloroplast.
The region of the chloroplast that was formed in the cyanobacteria before the endosymbiosis happened was the photosynthetic lamellae which contained the chlorophyll molecule and thus is the correct answer.
Thus, Photosynthetic lamellae are the correct answer.
Answer:
Choice C., High blood glucose levels can result from an overproduction of insulin
Explanation:
Blood sugar levels are regulated by two pancreatic hormones—insulin and glucagon. When blood sugar levels increase, insulin is released (beta cells of the pancreas), it binds to its receptors and consequently increase glucose uptake by cells, which effectively lowers blood glucose levels. On the other hand, when blood sugar levels decrease, glucagon is released (alpha cells of the pancreas), it binds to its cell receptors, and causes glucose to be released into circulation, thereby increasing blood glucose levels.
A single muscle cell is called a myocyte. Inside are sliding filaments called sarcomeres.
