Answer: space or shelter, ability to reproduce
Explanation:
The four limitations are
1.It's often impossible to repeat trials on the same subjects.
2-Subjects may report an inaccurate medical history.
3-It can be difficult to control all possible variables.
4-It's impossible to come up with testable scientific questions for human subjects.
Research involving human beings is ultimately necessary for improvements in human health and welfare. Any results about healthy physiology, illness causes, treatment effectiveness, learning, or behavior must be verified by carefully controlled investigations involving human participants. Sadly, not all human research have been valid and beneficial. It is possible to harm people in the name of research. The most well-known instances happened in Nazi Germany. Investigations conducted after the war found several crimes, including experiments in which participants were submerged in extremely cold water to determine how long it would take them to pass away from hypothermia.
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they used Franklin's x-ray picture and data as well as other mathematical data to determine the specific structure of the DNA double helix. Compare and Contrast the structure of prokaryotic and eukaryotic chromosomes.
Answer:
I'm assuming you meant pool instead of poolon, i'll take it as a grammatical error. Anyhow, the water in a pool on sunny days tend to have less chlorination then on regular days. This is because chlorine forms hypochlorite ions in the water, and these are broken down by the ultraviolet light from the sun. Rainy or shiny, the weather is always affecting the chemistry in your pool.
Now, if you want to get more complicated into it, you can add a stabilizer into the pool. The common one safely used in pools is cyanuric acid. This almost completley prevents all de-chloronification.
I hope this information was of any use to you.
The ant and aphids have mutualism type of relationship because they both profit from one another. The aphids are protected while the ant is fed.
<h3>What is Mutualism?</h3>
- Mutualism is a partnership in which both species participate and gain from it.
- In this instance, ants profit because they eat the waste products left behind by aphids, while aphids profit because ants guard them.
- An illustration of a mutualistic relationship is the one between an animal called an oxpecker and a rhinoceros or zebra.
- The spider crab continues to be hidden from predators.
- Bees with flowers - Another mutualistic link exists between bees and flowers.
- Bees move between flowers to collect the nectar they require to produce honey.
- Pollination occurs when the bee transfers pollen from one plant to another.
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