Answer:
Option A, by having a constant supply of blood
Explanation:
Blood that flows to the muscles bring oxygen from the atmosphere to the contracting muscles where it gets consumed. During large muscle exercise, two physiological needs arise – a) high and prolonged muscle blood flow and b) regulation of blood pressure so that there is adequate perfusion of pressure to all organs. In order to meet both the requirements, the blood flow increases so that the vasoligating muscles do not outstrip the cardiac output.
Hence, option A is correct
Answer:
The researcher's claim is in the same way of the observation made because from it it is inferred that in a population of bacteria with genetic variation, in which some of them have plasmids and others do not, the population survives because those bacteria with plasmids are resistant to antibiotics, if for example there were only bacteria without plasmids all bacteria would die when using antibiotics so this is an example that genetic diversity is an evolutionary advantage
Answer:
The correct answer will be option- A
Explanation:
Both dinosaur and the trees are the living organisms which share many characteristics of the living organisms.
Among the given choices, the most common things between these two different species of the living organism are that they are made of the same constituents which makes the lowest organization of life on earth that is the cell.
Since the cells of both tress and the dinosaur are made up of the same matter or the constituent elements arranged in similar fashion therefore, the selected option is the correct answer.
It is definitely false. Remember that regarding adult brains, the older the brain gets the more connections you use to lose. So this statement is false. Hope this can help you a lot
