Hermione is trying to replicate the Polyjuice Potion that they created in their second year at Hogwarts. The problem is that she doesn't have the exact ingredients that she needs and she is trying to substitute imitation bat wings instead of real bat wings. She knows that they are not as strong as the original so she is making three separate batches using the same type of cauldrons for each batch. She will also use the same fire so she can test which amount of imitation bat wing will work. The potion will turn green when the correct amount is added.

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.