Answer:
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.
Explanation:
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None of them look to do that since none of them look or sound living and plants can't sexually reproduce
Answer:
The correct answer is A slight negative charge around the oxygen molecule and slight positive charge of the hydrogen atoms forms a polar molecule.
Explanation:
If we go through the chemical structure of water molecule ,we will see that a molecule consiat of 2 hydrogen atoms and one oxygen atom.As the electro negativity of the oxygen atom is far greater than that of hydrogen atom,the oxygen atom attract the bonding electron pair towards itself.This ultimately result in the generation of bond polarity.
As oxygen attract the bonding electron pair towards itself the oxygen atom acquires slight negative charge .On the other hand the hydrogen atoms gets partial positive charge.
Now the partial positive charged hydrogen atoms and partial negative charged oxygen atom forms a polar molecule known as water.
The answer is A.
Thrift-store donations choices supports a circular economy.
A thrift store receives donated items or sells goods on consignment. It is run by a not-for-profit group instead of a merchant. The reason for establishing a thrift store is to raise money for charities through the not-for-profit group. The money realized in a thrift store is used to fund a non profit organization or other charity.
Answer:
Explanation:
The main flaw in Dalton’s theory – i.e. the existence of both molecules and atoms – was later corrected in principle in 1811 by Amedeo Avogadro. Avogadro proposed that equal volumes of any two gases, at equal temperature and pressure, contain equal numbers of molecules.