Q: What is the main cause of outdoor air pollution? Read this paragraph and choose the correct option from the provided answers: The main cause of outdoor air pollution is the burning of fossil fuels. Outdoor air pollution causes human health problems, acid rain, and global climate change. Choices: - methane from livestock - aerosol spray - chimneys - burning of fossil fuels A:
burning of fossil fuels

(Question)
Q: Iron is oxidized to fe2+(aq) at an anodic site on the surface of the iron, which is often an impurity or this? Read this paragraph and choose the correct option from the provided answers: Iron is oxidized to Fe2+(aq) at an anodic site on the surface of the iron, which is often an impurity or a lattice defect. Oxygen is reduced to water at a different site on the surface of the iron, which acts as the cathode. Electrons are transferred from the anode to the cathode through the electrically conductive metal. Water is a solvent for the Fe2+ that is produced initially and acts as a salt bridge. Rust (Fe2O3xH2O) is formed by the subsequent oxidation of Fe2+ by atmospheric oxygen. In the corrosion process, iron metal acts as the anode in a galvanic cell and is oxidized to Fe2+; oxygen is reduced to water at the cathode. The relevant reactions are as follows:. Choices: - displacement defect - spontaneous mutation - ladder complex - lattice defect A:
(Answer)
lattice defect

Ques: Q: What is an alloy of copper and tin? Read this paragraph and choose the correct option from the provided answers: Bronze, an alloy of copper and tin, has been in use since ancient times. The Bronze Age saw the increased use of metals rather than stone for weapons, tools, and decorative objects. Brass, an alloy of copper and zinc, is widely used in musical instruments like the trumpet and trombone. Choices: - zinc - gold - silver - bronze A:
Ans: bronze

(Q).
Q: What type of tumor mostly does not cause serious problems and can be completely removed by surgery? Read this paragraph and choose the correct option from the provided answers: Choices: - toxic - persistent - malignant - benign A:
(A).
benign

Ques:Q: Like other bryophytes, moss plants spend most of their life cycle as? Read this paragraph and choose the correct option from the provided answers: Like other bryophytes, moss plants spend most of their life cycle as gametophytes. Find the sporophyte in the diagram. Do you see how it is growing on the gametophyte plant?. Choices: - spores - copepods - bacteriophages - gametophytes A:

Ans:gametophytes

Question: Q: What do a group of cells that work together form? Read this paragraph and choose the correct option from the provided answers: Cells are grouped together to carry out specific functions. A group of cells that work together form a tissue . Your body has four main types of tissues, as do the bodies of other animals. These tissues make up all structures and contents of your body. An example of each tissue type is pictured in the Figure below . Choices: - molecule - organelle - organ - tissue A:
Answer:
tissue