Answer the following question given this paragraph: A golf ball and a table tennis ball are about the same size. However, the golf ball is much heavier than the table tennis ball. Now imagine a similar size ball made out of lead. That would be very heavy indeed! What are we comparing? By comparing the mass of an object relative to its size, we are studying a property called density. Density is the ratio of the mass of an object to its volume. Q: Which property can you study by comparing the mass of an object relative to its size? Choices: - volume - weight - motion - density A:
density
(Question)
Answer the following question given this paragraph: Diffusion is the movement of a substance from an area of a higher amount toward an area of lower amount. A concentration gradient initially exists across the cell membrane. Equilibrium is reached when there is an equal amount of the substance on both sides of the membrane. Q: What do you call the movement of a substance from an area of a higher amount toward an area of lower amount? Choices: - filtration - extraction - precipitation - diffusion A:
(Answer)
diffusion
Ques: Answer the following question given this paragraph: Living species of chordates are classified into three major subphyla: Vertebrata, Urochordata, and Cephalochordata. Vertebrates are all chordates that have a backbone. The other two subphyla are invertebrate chordates that lack a backbone. Q: Living species of chordates are classified into three major subphyla: vertebrata, urochordata, and what? Choices: - spirogyra - invertebrates - xerophyte - cephalochordata A:
Ans: cephalochordata
(Q).
Answer the following question given this paragraph: Thick fur and a layer of blubber keep polar bears warm in their Arctic ecosystem. Why do you think their fur is white? Why might it be an adaptation in an Arctic biome?. Q: What 2 things keep polar bears warm in their arctic ecosystem? Choices: - hibernation, thick fur - colourful fur , blubber - camouflage, blubber - thick fur, blubber A:
(A).
thick fur, blubber
Ques:Answer the following question given this paragraph: Behind the nasal cavity, air passes through the pharynx , a long tube. Both food and air pass through the pharynx. Q: Name the organ located behind the nasal cavity in which both food and air pass through? Choices: - medulla - sinus - diaphragm - pharynx A:

Ans:pharynx
Question: Answer the following question given this paragraph: milk of magnesia, pH = 10.5 2. pure water, pH = 7 3. wine, pH = 3.0. Q: What is the ph of pure water? Choices: - 5 - 4 - 2 - 7 A:
Answer:
7