Answer: There are about 120 million rods in the human eye and about 6 million cones.
Explanation:
The retina of the eye consists of two photoreceptors which are called as rods and cones. The rods are numerous and are about 120 millions in numbers, these are more sensitive then the cones. The rods are sensitive to the light intensity but are less sensitive to the color.
There are about 6 million cones in the eye and these provides sensitivity towards the detection of color. These are more concentrated in the spot which is called as the macula.
(No. of chromosome pairs) x 2 = (No. of chromosomes) ✅
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- Humans have 23 pairs of chromosomes, for a total of 46 chromosomes.
- The two types of chromosomes are:-
- - There are 22 pairs of autosomes in humans.
- - They are X and Y chromosomes. In the case of males, they have one X and one Y chromosome, while females possesses two X chromosomes.
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They act like convey belt, transporting water the both sides of the pole
B .measure the total energy in a dolphin before feeding and the food fed to the dolphin. then measure the energy in the dolphin after feeding and determine the difference. etc