The the poles because that where the lines start
I believe the answer is D.
The reason is because mass cannot be destroyed. All the mass can really do is become more of less dense.
Answer:
42 19 K→42 20 Ca+e−
Explanation:
Naturally-occurring potassium atoms have a weighted average atomic mass of 39.10 (as seen on most modern versions of the periodic table.) Each potassium atom contains 19 protons p+ and thus an average potassium atom contains about 39.10−19≈20 neutrons n0.
This particular isotope of potassium-42 contains 42 nucleons (i.e., protons and neutrons, combined;) Like other isotopes of potassium 19 out of these nucleons are protons; the rest 42−19=23 are therefore neutrons.
On the asexual reproduction your supposed to drag down facts about it from above into its circle.
same thing for the sexual reproduction.
on the middle you're supposed to put it the things that asexual reproduction and sexual reproduction have in common or the same.
I hope this helps
please mark this as brainiest!
