The correct answer is that t<span>here are probably very few astronauts with twin siblings.
We have to take into consideration that astronauts are a very small group of people and that there is only a small chance that one of them has an identical twin. Although the tests can be hard to do and categorize these kinds of tests and measures are not unethical as long the scientists have the person's permission. Currently, we possess the technology and resources to keep a person in space for a year, but it will be really hard to find more astronauts that have identical twins.
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Answer:
The answer is a cell.
Explanation:
The cell is the structural and functional unit of life in an organism
improved soil fertility
Explanation:
One of the direct effect of biodiversity is improved soil fertility. Biodiversity deals with variations in life inhabiting a particular area.
- A typical soil is made up of water, air, organic matter and minerals.
- Organic matter is the component of soil that deals with remains of organisms in soils.
- This component is important to the soil.
- The more diverse an ecosystem is, the richer its organic matter component.
- This eventually tells on the fertility of the soil.
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Semen is the thick fluid that contains the sperm that is basic in nature, thus protecting it from the acidic nature of the vagina.
Answer:
Unlike animal cells, bacteria have a porous cell wall surrounding their plasma membrane. The cell wall may help bacteria survive in <u>hostile</u> environment.
Explanation:
Diferent from cells of higher organisms, the bacterium is faced with an unpredictable and often hostile environment.
Bacteria have evolved in order to survive, a sophisticated and complex cell envelope that protects them, but at the same time allows selective passage of nutrients from the outside and waste products from the inside.