Answer:
There are biotic factors which are living things or things that used to be living(fish, birds, etc), and abiotic factors which are things that are not alive and have never been alive(rocks, water, etc).
Explanation:
Answer:
All animals need food to survive.
Explanation:
The answer is B Because fat (myelin) acts as an insulator, membrane coated with myelin will not conduct an impulse.
The answers would be 24 and fertilises.
Pollen is the male gamete of lily, which is a haploid cell, with only half the chromosomes of the normal diploid ones. Therefore, if the haploid gamete has 12 chromosomes, so the diploid would be 12+12 which makes 24.
The egg is also a gamete of lily, but it's a female gamete. It is also a haploid cell, with only 12 chromosomes which is given in the question. So, when the sperm fuses and fertilises the egg, the zygote would have 24 chromosomes which is formed by 2 haploid gametes.
Answer:
• neutrons
• protons
Explanation:
The nucleus is made up of two types of subatomic particles, that is the protons and neutrons.
