Hello There! ^_^
Your question: Select the adaptations that might help a species survive a change in its environment. You can select more than one
Your answer: The following might help a specie to help survive a change on it environment:
A) The ability to eat a variety of foods
B) Limited genetic variation
D) The ability to survive for long periods of time without food or water.
Hope this helps! :D
Technically this can be answered in a number of ways. But in elementary biology the cell is considered to be the basic unit of life.
1.
The first prokaryotic cells (the less complex in its organization and with no organelles involved in membranes) evolved about 3.5 billion years ago. Therefore, the correct answer is D. 3.5 billion.
2.
Then, some prokaryotic cells evolved to use the sunlight to produce energy and release O2 into the atmosphere about 2.8 billion years ago. Therefore, the correct answer is C. 2.8 billion.
3.
After that, the prokaryotic cells evolved to cells with organelles bounded by membranes, and then the eukaryotic cells evolved about 2.5 billion years ago. Therefore, the correct answer is B. 2.1 billion.
4.
A long time after that, aproximately 650 million years, the first life composed of an organism with multiple cells evolved. Therefore, the correct answer is A. 650 million.
It's D, a constricted vessel with low blood pressure (since low blood pressure is when your body isn't getting enough blood)