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statuscvo [17]
3 years ago
10

Why are these studies effective for testing a drug that may elevate mood and relieve feelings of depression?

Biology
1 answer:
Crazy boy [7]3 years ago
6 0
<span>B)Double-blind studies are ways to ensure that only the researcher can figure out who is getting the effective drug. This is to help and maintain the objectivity of the study especially because since it concerns humans as test subjects. Moreover, it is also to avoid biases and errors which can be elicited by either the researcher himself or the participants. </span>
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Please help me , Describe how bonds contain energy and what the energy is used for
astraxan [27]

Answer:

Chemical bonds contain potential energy.

Explanation:

Chemical bonds always contain potential energy. The atoms of the bond want to move to a lower energy to become more stable.. The energy for breaking bonds only comes when stronger bonds are formed.  This energy is used to tear apart the bonds holding the Hydrogen atoms together. The strength of the covalent bonds depend on the overlap between the valence orbitals of the bonded Atom.

6 0
3 years ago
Where in the leaf is responsible for most of the photosynthesis?
Fynjy0 [20]
Photosynthesis takes place<span> inside plant cells in small things called chloroplasts. Chloroplasts (mostly found in the mesophyll layer) contain a green substance called chlorophyll. Below are the other parts of the cell that work with the chloroplast to make </span>photosynthesis happen<span>.</span>
8 0
4 years ago
Allele frequency refers to the fraction of individuals with a particular version of a given gene.
Ganezh [65]

Answer:It causes random changes and the allele frequency of certain traits may increase or decrease.

Explanation:

Hope I am right

6 0
3 years ago
Please help with this
Tanya [424]
Test One: All short fur
Phenotype ratio: 4:0
Test Two: three short fur and one long fur
Phenotype ratio: 3:1
Test Three: all long fur
Phenotype ratio: 4:0
Genotypes for fur length dominant
G: FF, and Ff (These are the genotypes for short fur, short fur is a dominant gene.
P: Short fur is dominant
Genotypes and phenotypes for fur length recessive
G: ff
P: Long fur is recessive
If you have a hamster with short fur, the possible genotypes the hamster could have is FF, and Ff
If you have a hamster with long fur, the possible genotype is ff.
5 0
3 years ago
Here you can see before and after hurricane Katrina photos of coastal New Orleans. Even though we cannot stop a hurricane, we ca
galben [10]
The answer is letter c
7 0
3 years ago
Read 2 more answers
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