Explanation:
Option first is the correct one
The answer is A. a light wave
C and D both need water as a medium and sound needs air to vibrate in order to travel. light, on the other hand, does not need a medium
Answer:
It is possible to produce an offspring from a zebra mating with a donkey. Indeed, in Florence, Italy, a male zebra mated with a female donkey and produced a striped mule.
Apocrine sweat glands are most affected by the hormonal changes that occur during puberty.
What is puberty ?
Between childhood and adulthood, puberty is a time of rapid growth, the emergence of secondary sexual traits, the attainment of fertility, and significant psychological changes. Although the order in which pubertal changes occur is fairly predictable, their exact time varies greatly.
At puberty, sex hormones stimulate the apocrine sweat glands, which then begin to work. In the groin and axilla, they are linked to hair follicles. The thick, protein-rich substance has no smell at first but may acquire one after coming into contact with germs.
To learn more about pubertal changes click on the link below:
brainly.com/question/15328076
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Passive because the water flow gets weaker mark brainliest please and have a good day
