Help I’ll give you a fruit role up and a blue jolly rancher

What are the most effective dog-training techniques? - a blog from an expert dog trainer

Why are dogs especially intelligent animals? - the encyclopedia entry "Canine"

How do scientists measure the intelligence of dogs? - an article from the Journal of Animal Biology

Explanation:

1. Dog-training : dog trainer!

2. Encyclopedias often give reasons on why and what more than anything.

3. Science journals give their methods and reasoning on their projects a lot.

the president was the speaker and it was a great part of history.

explanation:

video of the national aeronautic space administration's (nasa) coverage of president john f. kennedy’s address at rice university, houston, texas, concerning the nation's efforts in space exploration. in his speech the president discusses the necessity for the united states to become an international leader in space exploration and famously states, "we choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard."

16.) true

17.) true

18.) it doesn't say

19.) true

20.) false

explanation: