Meteoroids are often called shooting stars so your answer is C.
C. Meteoroids
Answer:
Vitamin A has several important functions. These include: helping your body's natural defence against illness and infection (the immune system) work properly. helping vision in dim light.
Explanation:
Answer:
Option-A
Explanation:
The American College of Sports Medicine (ACSM) now does not create the physical guidelines of their own instead produces the guidelines produced by the Physical Activity Guidelines for Americans.
The guidelines are different for different age groups and for the adults which is the group which likes doing physical training, the guidelines suggest that a person should do either 2.30 hours to 5 hours of the moderate exercise per week or 75 minutes to 150 minutes vigorous exercise per week.
In the given question, the most suitable option which follows the guideline of the ACSM is option-A.
Thus, Option-A is the correct answer.
Explanation:
Food chain is the process or method that connects plants and animals to the ecosystem. In this process, herbivorous animals feed on plant for their nutrition and the carnivorous animals feed on the herbivores as their source of food.
Soil plays a key role in this process as it contains many molecules like phosphorous, nitrogen etc. which is taken up by the plants through roots and hence consumed by the animals. This is how energy ascends from one trophic level to another although there is a decrease in each increasing trophic level.
<span>The answer is chromatin. Chromatin is composed
of DNA wound up in protein complexes called histones to form nucleosomes. At the
start of mitosis or meioses, chromatin is folded up into a 30nm fibre which is sequentially
folded up to 1400nm fibres .</span>