Answer:
Explanation:
It is estimated that the Precambrian Era lasted between 3.9 and 4 billion years. Many scientists believe that this era accounts for 90 percent of the world's history.
we risk losing due to climate change is food. Thus option C is correct.
<h3>What are the impact of climate change on species ?</h3>
Climate is the crucial factor for all living organism, as it determine whether an organism is going to survive or not.
Global warming is one of the major factor resulted from release of green house gases.
It leads to habitat loss, change the migration capabilities, alter the competitive relationships.
The fate of the species completely depend on climate change, those who are able to move new area with new climatic condition they will meet their physical, biological, and climatic needs.
Thus option C is correct.
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Cyanobacteria, also known as blue-green algae, are found in vast quantities in fresh and salt water. Cyanobacteria are able to conduct photosynthesis. By utilising energy from the sun, they produce carbohydrates from water and carbon dioxide. As a byproduct, they produce oxygen. So cyanobacteria provided oxygen to the atmosphere that allowed other lifeforms to develop.
The Answer to this question is b
Osteoporosis <span>is one of the most serious long-term side effects of severe calorie restriction.</span>
