What occurs when the sperm fuses with the egg?

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?

There are two tomato plantlets one of them is kept in an oxygen chamber with a light source and another is kept in sunlight. both of them are watered regularly what will be the observation after two weeks