I think it's oxygen and water because they are the substance for cellular respiration.
Answer: (1) It has a tail to travel to the egg (2) contains a nucleus in the head which will fertilise the egg
Explanation: Firstly it has a tail to help it travel to the egg. Secondly it contains the nucleus in the head that will fertilise the egg. Thirdly the acrosome contains enzymes in order for the sperm to penetrate the egg. Finally, the sperm cell is packed with mitochondria to provide the energy needed to reach the egg.
When a plant forms new tissue at the tips of its roots and Stems, this new tissue growth is a direct result of Cell division.
The following facts apply about Jupiter;
It is the largest planet (in the solar system) – 13,000 times bigger than earth
It has retrograde motion. However, the retrograde motion is actually an illusion due to the fact that the earth catches up with Jupiter planet during the revolution around the sun.
