UnScramble this Word: r a t s e c e?

Questions

what is the name of the english naturalist that published the book 'the origin of species by means of natural selection'?

the author of 'the yearling' and 'cross creek' was _________ _______ _______.?

a person who starts fires maliciously is a(n) _________.?

the loon, shoebill and grebe are all types of what?

what is the third planet from the sun?