Answer the following question given this paragraph: Polyisoprene is a polymer of isoprene and is better known as rubber. It is produced naturally by rubber trees, but several variants have been developed which demonstrate improvements on the properties of natural rubber. Q: What is polyisoprene better known as? Choices: - rayon - styrofoam - silicon - rubber A:
rubber
(Question)
Answer the following question given this paragraph: Oil is a thick, dark brown or black liquid. It is found in rock layers of Earth's crust. Oil is currently the most commonly used source of energy in the world. Q: What is a thick, dark brown or black liquid found in rock layers of the earth's crust? Choices: - propane - fossil fuel - coal - oil A:
(Answer)
oil
Ques: Answer the following question given this paragraph: Ocean waves are energy traveling through water. They are caused mainly by wind blowing over the water. Q: What are ocean waves mainly caused by? Choices: - tides - gravity - humidity - wind A:
Ans: wind
(Q).
Answer the following question given this paragraph: Q: What two types of communication do both humans and birds use primarily? Choices: - sensual and auditory - material and auditory - interaction and auditory - visual and auditory A:
(A).
visual and auditory
Ques:Answer the following question given this paragraph: Darwin finally published his theory of evolution by natural selection in 1859. He presented it in his book On the Origin of Species . The book is very detailed and includes a lot of evidence for the theory. Darwin's book changed science forever. The theory of evolution by natural selection became the unifying theory of all life science. Q: Which landmark book on evolution via natural selection did charles darwin publish in 1859? Choices: - on the origin of mammals - on the ethnic of species - on various kinds of animals - on the origin of species A:

Ans:on the origin of species
Ques:Answer the following question given this paragraph: Surface tension comes from the fact that particles at the surface of a liquid do not experience interactions from all directions, leading to an imbalance of forces on the surface. Surface tension is responsible for several well-known behaviors of liquids, including water. Liquids with high surface tension tend to bead up when present in small amounts ( - ball-ch10_s03_f06). Surface. Q: Surface tension comes from the fact that particles at the surface of a liquid do not experience interactions from all directions which leads to what on the surface? Choices: - degradation of forces - floating particles - waves - imbalance of forces A:

Ans:
imbalance of forces