Answer:
A: Density-independent factor
Explanation:
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The correct answer is telescopic.
A scope is also known as a telescopic sight refers to an optical sighting apparatus, which is based on a refracting telescope. They are incorporated with a certain pattern of graphic image mounted in an optically suitable alignment in their optical system to produce a precise focusing point.
The telescopic sights are utilized with all the kinds of systems, which need precision focusing, however, they are most generally used on firearms, mainly the rifles.
Eliminate B and D, not all single celled organism carry out through photosynthesis , they called singled celled organism and not work with other cell, it's either A and C, single celled organism is not a complex organism. so you can eliminate letter C.
so the best answer is A, although they have multiple organs system to maintain their internal stability.
Answer:
A. a solid melts into a liquid
Explanation:
The word- descriptions pair should be paired as follows;
- blood viscosity: the friction red blood cells encounter when moving past each other
- blood pressure: the force of the blood against the vessel wall.
- cardiac output: the volume of blood pumped out by one ventricle each minute.