Please see your prior post.
Sra (aka Mme)
What is "internal fertilization" and how does it happen? What kind of animals use this method? List a few animals. give two advantages and two disadvantages.
What is it: when a sperm cell and an egg cell unite outside the bodies of the parents.
How does it happen: if a spermcell comes in contact with an egg cell of the same species, fertilization may occur.
Who uses it: it is commonly used amongst aquatic animals. Example, sea urchins and salmon.
2 advantages: very little energy is required to find a mate. Large numbers of offsrping are produced at one time.
2 disadvantages: millions of gametes are released but many won't survive. zygotes and embryos form outside of parents' bodies are unprotected and preyed upon.
How could I change any of this so that 9/10 year olds can understand?
Thank you very much!!
2 answers
Please check your facts. Internal fertilization occurs inside the body of the female.
1 answer