Answer:
The answer is: Species A is more primitive than species B.
Explanation:
Species A has worse genetics than all the other fishes.
The answer is C
Chemical properties or chemical changes are the ones which include changes that alter the identity of a substance. For example: burning of any substance which is also called combustion. You burn a piece of paper it changes its identity. It was cellulose fibres earlier now it’s ash after burning.
You burn petrol it was mixture of hydrocarbons but when burnt it changes to smoke which is just gases like carbon dioxide or nitrogen oxides. This is a chemical change
Changing of states is a physical change not chemical change. Think of meeting of ice the water molecules which were in solid state after melting become water molecules in the liquid state. Similarly, the evaporation or boiling will change the water molecules in the liquid state to the gaseous state also called its vapor state. These do not change identity it’s just the water molecules always may it be any state, solid, liquid or gaseous. So, boiling point and melting point are physical properties not chemical. The identity remains same during these processes.
Mass and color are not chemical properties. They don’t change identity when you measure them. If you weigh yourself on weight u won’t change into something else.
Answer:It has 8grams of hydrgen
Explanation:
Answer: B. trigonal planar
Explanation:
Valence Shell Electron Pair Repulsion Theory (VSEPR) is a model to predict the geometry of the atoms making up a molecule where atoms are arranged such that the forces of repulsion are minimum.
If a central atom is bound to three electron domains ,the number of electron pairs is 3, that means the hybridization will be 
and the electronic geometry of the molecule will be trigonal planar as the electron pairs will repel each other and attain a position which is most stable.
Example: 
with 3 electron domains has trigonal planar geometry.
