Answer:
Photosynthesis makes the glucose that is used in cellular respiration to make ATP. While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration.
Explanation:
The products of Photosynthesis are the reactants of Cellular Respiration and vice-versa. It is also shown in the equation;
Photosynthesis: 
= 
Carbon Dioxide + Water + energy from light = Glucose + Oxygen
Cellular Respiration: 
Glucose + Oxygen = Carbon Dioxide + Water + ATP
For a question to be answerable by science, it must be testable. This means that there must be some thing that can be changed, an independent variable, and in turn, the results change.
Oftentimes, the scientific method is used when testing something. The steps of the scientific method are as follows:
Question: This is when something is observed, and you ask, "I wonder what would happen if..."
Hypothesize: this is where you try to guess the answer to your own question based solely on logic
Experimentation: This is where you actually design and conduct multiple experiments to test the hypothesis that you previously made
Observe: this is when you record the results of your experiment
Analyze: You look at the gathered data, and make come to a conclusion based on the results
And then finally,
Report/Share: This is when you actually deliver your findings to the scientific community/world
Answer:
C. On average, 25% of the children are affected by the autosomal recessive disease if both parents are carriers.
Explanation:
A recessive trait is always expressed in homozygous genotype only. To have progeny with recessive traits from two normal parents, both the parents should be heterozygous carriers. For example, two normal parents with genotype "Aa" have 25% of the chances to have a child with homozygous recessive genotype (Aa x Aa = 1/4 AA: 1/2 Aa: 1/4 aa).
An autosomal trait is equally expressed in both males and females. Inbreeding increases the homozygosity and thereby, increases the risk of expression of recessive traits which are otherwise masked in heterozygous genotype.
Answer:Sugar molecules contain carbon, hydrogen, and oxygen: Their hydrocarbon backbones are used to make amino acids and other carbon-based molecules that can be assembled into larger molecules (such as proteins and DNA)
The electrons in the outermost shell of the covalent compounds are shared by nearby atoms. As there are no free electrons for conducting electricity, the covalent compounds are perfect insulators at absolute zero. As the temperature increases, some electrons move from valence band to conduction band. This gives rise to conductivity. But as the numbers of charge carriers are very low, covalent compounds are poor conductors. On the other hand metals are good conductors cause of their bonding. Metallic bonding consists of a sea of electrons rather than discreet bonds. The free electrons are able to move freely. Since electricity and heat need electrons to move, the bonding promotes conductivity.
