Explanation:
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Answer:
Explanation:
In the first option, the compound 
has 1 hydrogen atom and 3 Oxygen atoms. There are 3 times as many oxygen atoms as hydrogen atoms.
In the second option, the compound has 2 hydrogen atom and 4 Oxygen atoms. That is 2:4 = 1:2. Therefore, there are twice as many oxygen atoms as hydrogen atoms.
In the third option, the compound 
has 2 hydrogen atoms and 1 Oxygen atom. There are ½ times as many oxygen atoms as hydrogen atoms.
In the fourth option, the compound 
has 3 hydrogen atoms and 4 Oxygen atoms. 4 oxygen atoms to 3 hydrogen atoms.
<h2>
Zone of physiological stress</h2>
Explanation:
For this particular species I would label 90°F to 94°F as the temperature zone of physiological stress.
We find that within this temperature range the number of individual in the population lessens. This means they are under certain physiological stress which limit there growth.
Again within 95°F–96°F we find that the number of individual is maximum. This means that the population can utilize the available resources to their maximum efficiency at this range. So, it is the optimum range.
Answer:
a sequence of DNA responsible for coding a protein = gene
The complex range of alleles an organism carries for... = genotype
an allele that determines... = dominant gene
the observable characteristics= phenotype
Answer:
The hormones linked with happiness are called endorphins
Explanation:
