Answer:
A. They could contaminate surface and ground water sources.
Explanation:
- Landfills are biodegradable waste sites that contain harmful gases and thus are kept at the periphery of the city. They include greenhouse gases and contribute to global warming.
- These landfills are hazardous places as they contain pollutants that pollute the environment and water, land, and soil.
Answer:
This question lacks options; they are:
a. 4x b. 10x c. 20x d. 100x
The answer is A
Explanation:
The objective lens is an integral part of a light microscope as it provides the viewer with the picture or image of the specimen. There are several types of objective lens depending on their magnification.
The lowest possible objective lens with the power of 4x is called the SCANNING OBJECTIVE. In combination with the eye/occular lens, it provides a magnification of 4x × 10 = 40x. The name of this lens comes from the fact that it provides a full scan of every part of the specimen being viewed before diversifying into a specific region by changing the objective.
C Diagram the flow of oxygen-rich blood through the body of a non-smoker. Then diagram the flow of blood with less oxygen (from airway resistance) through the body of a smoker.
