Which one of the following shows a unique relationship with an insect that has coevolved with it and that is the only insect that can pollinate this tree?

Consider the following :

1. Butterflies

2. Fish

3. Frogs

How many of the above have poisonous species among them?

According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulfur dioxide emissions?

Consider the following statements:

Statement-I: The European Parliament approved The Net-Zero Industry Act recently.
Statement-II: The European Union intends to achieve carbon neutrality by 2040 and therefore aims to develop all of its own clean technology by that time.

Which one of the following is correct in respect of the above statements?