That is because all meridians start and end at the same point, unlike parallels that are parallel. Meridians all start at the north pole and go towards the south. Therefore, all of them meet at that point that is the north pole, so the distance between all of them is 0 miles.
Hi.
Protonema form the earliest stage of the moss life cycle.
Hope this helps :)
2 and 4 should be correct
C) The condenser
Condenser is used to collect and focus the light from the illuminator on to the specimen.