Answer:
Natural Selection is an evolutionary process that caused the increment of dark-coloured Biston betularia moths in England. It happened due to increase of air pollution in the industries. The bark of the trees became darker because of the deposition of pollutants.
In order to save itself from predators, the species of Biston betularia evolved itself to a dark coloured species so that the predators gets confused between the bark of the tree and the Biston betularia.
Shivering occurs when the core temperature of the body begins to decrease which would threaten normal body function. Shivering is a response by the body to bring back temperature back to homeostasis. Trembling is the continual involuntary contraction of muscles. Muscle activity releases heat that warms up the body. This is the reason why we sweat during physical activities as the body sheds excess heat generated by the muscles in order to maintain the homeostatic body temperatures of 37 degrees centigrade.
Answer:
The carbon atom has four valence (outermost) electrons. Because of this unique configuration, it is easier for the carbon atom to share its four electrons with another atom or atoms than to lose or gain four electrons.
Explanation:
The carbon atom has four valence (outermost) electrons. Because of this unique configuration, it is easier for the carbon atom to share its four electrons with another atom or atoms than to lose or gain four electrons.
Answer:
How hard the blood pushes on the inside of the blood vessels is called Blood Pressure
The total amount of blood the heart pumps in one minute is called Cardiac Output
When blood vessels open wider during exercise, they are said to dilate
How many times your heart beats in one minute is called Heart Rate
The force that can put unhealthy tension on the heart as it is pumping is called Blood pressure
The amount of blood the heart pumps out in one beat is called Stroke volume.
Explanation:
All this concepts to the heart and cardiovascular system. It is important to know how heart is functioning to see how blood circulates.
Answer:
If you are referring to a cellular organelle than I would say lysosomes because, they do just that, they digest intracellular waste.
