Why is meiosis necessary in a sexual life cycle?

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error?

What is the farthest destination to date for a human spaceflight mission?

What are the 3 types of artificial cloning