Answer:
B.
The oil reduced the friction between the floor and his mother's foot.
Explanation:
When things slide, it is just fancy terms for one of two things- force exceeding the amount of friction on the ground, or the friction decreasing itself.
In the question, it is implied that Trevor's mom is walking completely normal, excluding the olive oil; therefore, there is no force exceeding what the friction of the ground can prevent from sliding. This leaves the other option, which implies that the olive oil decreased the friction between the floor and his mother's foot, which makes sense as olive oil is a lubricant.
Henceforth, the answer is B. The oil reduced the friction between the floor and his mother's foot.
Answer:
The correct answer is D) the vacuoles can "come and go" across the plasma membrane.
Explanation:
The endosymbiotic theory exposes that mitochondria and chloroplasts were "swallowed" several years ago by a prokaryotic cell, that then became eukaryotic. These two organelles were originally two living and independent organisms, that's why the have their own DNA and also divide splitting. Anyway, the endosymbiotic theory does not explain anything about vacuoles and also, the sentence is not true. No organelle can come and go across the membrane, it's impossible for an organelle to break such barrier.
A human female has XX chromosomes