<span>c. numbers of neutrons.</span><span>
Isotopes are atoms of the same element with the same number of protons and same number of electrons but with <span>different number of neutrons. They differ in the number of neutrons that is why they also differ in mass numbers. Since they have the same number of protons, they have the same atomic number.
For instance, when the nucleus of the isotope with a 68.926 amu, there are 30 protons and 39 neutrons in the nucleus. The best example for this is Zn (zinc-69 isotope) and Ga (gallium-69 isotope) which has 68.926 amu and 68.925 amu respectively. </span></span>
Lunar Tides: the moon's gravitational pull on the Earth is strongest at this time, because it is closest, causing especially high and low tides.
Solar Tides: the sun's gravitational pull on the Earth is strongest at this time, causing especially high and low tides (although it's not as powerful as lunar tides).
Spring Tides: named for when the tides "spring" forward during New and Full Moon's, because of how strong/weak the moon's gravitational pull is.
Neap Tides: the tides are especially mediocre at this time, because the sun and moon are at a right angle and pulling in opposite directions.
Spring and Neap Tides occur twice every moon cycle, which lasts 28 days, so every two weeks.
https://oceanservice.noaa.gov/facts/springtide.html
Your answer is C you were correct
Endocrine plays an important role in the regulation of metabolism, reproduction, water balance, and many other functions. I needed to type a lot but the answer is endocrine.
Let me explain something that can make you easily understand ok?
So as you know, humans has 46 chromosomes right?
Also, you know that when a gamete is formed there are 2 cell infused to form that 46 chromosomes. (The human cell and sperm)
IF the cells has 46 chromosomes each and it infused with another 46 chromosomes then the total will be 92 chromosomes and not 46 chromosomes. That's why the cell produced only has 23 chromosomes which is fewer so that when it form a genetic material, the total chromosomes will be 46 chromosomes.
Sorry if my english sucks, hope you understand REEEEE
you Are welcome
