Answer:
1. D
2. C
Explanation:
Asexual reproduction has one set of genes with no combination and one person.
Sexual reproduction is with two people that provide the offspring with two different sets of genes that can be mixed creating diversity.
The Particles in the gas are to far apart from each other, so they do not have a volume nor shape.
Answer:
A hydrogen molecule forms from two hydrogen atoms, each with one electron in a 1 s orbital. The two hydrogen atoms are attracted to the same pair of electrons in the covalent bond. The bond is represented either as a pair of “dots” or as a solid line. Each hydrogen atom acquires a helium-like electron configuration. Shared electrons located in the space between the two nuclei are called bonding electrons. The bonded pair is the “glue” that holds the atoms together in molecular units. The hydrogen molecule is the simplest substance having a covalent bond.
Explanation:
Answer:
B. That energy can only be converted between different forms
Explanation:
The law of conservation of energy implies that energy can only be converted between different forms but can neither be created nor destroyed.
Energy is the ability to do work. It is very important physical quantity that is essential to all life forms.
Energy according to the law of conservation of energy is not produced neither is it destroyed.
Energy is simply transformed from one form to another.
Answer:
group 18 has 8 valence electrons, that's why they are stable.