1. A trait is an element of personality that is relatively stable throughout the lifespan and across contexts. And Characteristics is a description of someone’s or something’s features.
2. Technically yes
(Sorry I didn’t know #3)
4. It’s a gene
Answer:
A human heart is roughly the size of a large fist.
Explanation:
but the size varies according to an individual's age, health and size. The heart weighs 7 to 15 ounces.
The cell that has the nucleus is eukaryotic and the cell that doesn't have a nucleus is eukaryotic
hope it helps

Answer:
Prokaryotes have a nucleus, Eukaryotes don't
Explanation:
(see image)
Mitosis is the reproduction of cells