Did you forget to attach the picture?
Answer:
Option-C
Explanation:
The oxygen revolution refers to the increasing concentration of oxygen in the atmosphere around 2.3-2.4 billion years ago.
The studies have suggested that before the oxygen revolution the Earth's atmosphere was full of the hydrogen sulfide and methane gas in which the anoxygenic prokaryotes were evolving.
The cyanobacteria and other photosynthetic bacteria evolved the photosynthetic pigments which performed the experiment and oxygen gas was produced as a by-product.
With time this oxygen got accumulated in the atmosphere and the oceans and became one of the factors of anaerobic prokaryotic, the condition which they cannot escape. Later the oxygen producing prokaryotes evolved and formed the first eukaryotes.
Thus, the selected option is the correct answer.
Chloroplasts
<span>On the cellular level, the reactions for photosynthesis occur in organelles called chloroplasts . Blue-green algae carry-out the photosythesis reactions in the cytoplasm.
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Acromegaly is the medical term used to describe the abnormal growth of the hands, feet and face. It is caused by the overproduction of growth hormones by the pituitary gland.
If a person is suspected to have acromegaly, the best way to confirm it is through two key blood testing: 1. to check the level of the insulin-like growth factor-1 (IGF-1); and 2. an oral glucose tolerance test (OGTT).
Although most of the tissues in adult organisms maintain a constant size, the cells that make up these tissues are constantly turning over. Therefore, in order for a particular tissue to stay the same size, its rates of cell death and cell division must remain in balance.
