anisms?
Explain briefly.
1. Knives and piercing tools have a very sharp edge.
2. Explain the structure of the human ear and how it helps us to hear.
3. Explain the level of organization found in multicellular organisms.
4. The causes of deforestation.
5. Explain multiple reflection and lateral inversion with a diagram.
Answers
Answer:
Explanation:
Ans 1= The cutting edges of the tools like knives, scissors and blades have been provided by the sharp edges to allow the cutting of things easily with the sharp edges. ... Thus the cutting instruments have sharp edges so that more pressure can be applied and cut off the material with less force.
Ans 2= The eardrum vibrations caused by sound waves move the chain of tiny bones (the ossicles – malleus, incus and stapes) in the middle ear transferring the sound vibrations into the cochlea of the inner ear. ... This is where the streams of nerve impulses are converted into meaningful sound.
Ans 3=Multicellular organisms are made of many parts that are needed for survival. These parts are divided into levels of organization. There are five levels: cells, tissue, organs, organ systems, and organisms. ... Many cells working together form tissue.
Ans 4=Direct causes of deforestation are agricultural expansion, wood extraction (e.g., logging or wood harvest for domestic fuel or charcoal), and infrastructure expansion such as road building and urbanization. Rarely is there a single direct cause for deforestation.
Ans 5 = Multiple reflection of light is the reflection of light back and forth several times between reflecting surfaces. If a reflected light ray is reflected again on being incident on another surface, it is termed multiple reflections. ... In a Kaleidoscope, beautiful patterns are formed due to multiple reflections