Answer the following question given this paragraph: a small scrap of paper onto a droplet of water, the paper floats on top of the water droplet, although the object is denser (heavier) than the water. This occurs because of the surface tension that is created by the water molecules. Cohesion and surface tension keep the water molecules intact and the item floating on the top. It is even possible to "float" a steel needle on top of a glass of water if you place it gently, without breaking the surface tension (Figure 2.11). Q: What causes a small scrap of paper placed on top of the water droplet to float , although the object is denser (heavier) than the water? Choices: - diffusion - transfusion - van der waals force - surface tension A:
surface tension
(Question)
Answer the following question given this paragraph: Besides the four parts listed above, many cells also have a nucleus. The nucleus of a cell is a structure enclosed by a membrane that contains most of the cell's DNA. Cells are classified in two major groups based on whether or not they have a nucleus. The two groups are prokaryotic cells and eukaryotic cells. Q: What structure of a cell is enclosed by a membrane and contains most of the cell's dna? Choices: - vacuole - ribosome - epidermis - nucleus A:
(Answer)
nucleus
Ques: Answer the following question given this paragraph: Zappy's. Flight paths look curved due to the Coriolis effect . CC BY-NC 3.0. Q: What effect is responsible for flight paths looking curved? Choices: - resonant effect - volumetric effect - tonal effect - coriolis effect A:
Ans: coriolis effect
(Q).
Answer the following question given this paragraph: A: Acid rain dissolves and damages stone buildings and statues. The Figure below shows a statue that has been damaged by acid rain. Q: What type of rain dissolves and damages stone buildings and statues? Choices: - plastic rain - morning rain - stored rain - acid rain A:
(A).
acid rain
Ques:Answer the following question given this paragraph: Humans have 23 pairs of chromosomes in each body cell. Q: How many pairs of chromosomes are there? Choices: - 17 - 2 - 13 - 23 A:

Ans:23
Question: Answer the following question given this paragraph: Q: What type of cells in the body fluids and tissues of most animals specifically interact with and destroy pathogens? Choices: - Microglial cells - Dendritic cells - White blood cells - immune cells A:
Answer:
immune cells