Which situation is an example of competition that could be found in the grassland?
a. two shark populations utilize the same fish population as their main food source
b. lack of sunlight due to changes in the seasons restricts the growth of certain plants
c. deer eat berries and their droppings seed new areas, creating new berry bushes
d. two lion populations utilize the same gazelle population as their main food source

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.