Answer:
A substance that removes carbon dioxide gas
Explanation:
Options-
A. A substance that removes carbon dioxide gas
B. A plant to produce oxygen
C. A glucose reserve
D. A valve to release excess water
Solution -
It is given that the rate at which oxygen is consumed and the rate at which carbon dioxide is produced is same. Therefore, if we somehow are able to measure the volume of carbon dioxide, we can interpolate the rate of consumption of oxygen from it.
Hence, A substance that removes carbon dioxide gas is essential to provide accurate volumetric measurements of oxygen gas consumption
Option A is correct
It would be carbon dioxide
The best answer would most likely be genetics or genetic theory.
There were many doubts about Darwin's theory because Darwin could not yet describe the mechanism of inheritance. Mendel's work on inheritance was already published, 2 years earlier, but this eluded Darwin. It was only till after Darwin's death that the science of genetics came about.
This union brought about the "modern synthesis," a theory that proposes that both genetics and natural selection is a result of evolutionary changes.
The caloric value of food refers to the amount of energy that is produced as a result of complete combustion of that food under normal conditions.
Foods have energy which are stored in the chemical bonds that hold their molecules together. This stored energy is released when the chemical bonds are broken during metabolic processes such as respiration. The amount of energy in different foods differ and the quantity of energy in the chemical bonds that hold the food molecules together will determine the amount of energy that will be obtained from the food.
In most food molecules, the chemical bond that hold the food molecules together is C-H bond. C-H bond is a strong covalent bond which give stability to the food molecule. The higher the chemical energy that is stored in this bond, the higher the caloric value of food. Thus, the calorific value of food is depended on the quantity of energy that reside in the C-H bond.
A, Cold/dry air sinks below the warm/ wet are it is pushed upwards
