D both a and c sounds correct
B.
Mitosis involves somatic cells only.
Without any improvement within 5 days, usually after that you should make an appointment with your dentist.
Answer:
Traditionally, these fauna have come to represent an important development in the evolution of life on Earth, because they immediately predate the explosion of life-forms at the beginning of the Cambrian Period 541 million years ago.
Explanation:
hope this helped
Food energy flows from one organism to another. Arrows are used to show the feeding relationship between the animals. The arrow points from the organism being eaten to the organism that eats it.
