Ques:Q: Darwin found that, since all species are related to each other and some of them evolve together, so they develop similar what? Choices: - appearance - language - systems - adaptations A:

Ans:adaptations
-----
Ques:Q: What do vertebrate chordates possess that invertebrate chordates do not? Choices: - parasite - Thumb - Milk production - backbone A:

Ans:backbone
-----
Ques:Q: What model of the atom features an electron orbiting a nucleus, forming a closed-current loop and producing a magnetic field with a north pole and a south pole?. Choices: - hydrogen model - solar model - gravitational model - planetary model A:

Ans:planetary model
-----
Ques:Q: A diver's air bubbles increase in size as he approaches the surface because what decreases? Choices: - water direction - water weight - water energy - water pressure A:

Ans:
water pressure
-----