Question

Very Short Answer Questions
(6x2=121)
21. A. What is the difference between the set of milk teeth and permanent teeth?
B. What problems do old people face when they lose their teeth?
22.A. List some medicinal plants.
B. Which tree gives us wood to make furniture and houses? Why can't we use
wood from all tress to do so?
23. List some features of water plants which make them different from land plants.​

Answer 1

Answer:

its too toughhhhhhhhhhhhhhhhhhhhhh

Answer 2

Answer:

21.A.The enamel coatings of baby teeth are thinner than the enamel on permanent teeth. That's the reason the primary teeth usually appear to be whiter than the permanent teeth. You can really perceive this when a child has a mixed set. Permanent teeth appear to be more off-white, egg-shell or yellowish.

B.Missing and loose teeth can make it hard to eat and talk. As food choices become more limited, good nutrition and, eventually, overall health can go downhill fast. Speech problems and facial changes from missing teeth often lead to self-consciousness, social isolation, and even depression.

• 22.A.Catnip. Catnip (nepeta cataria) is a fun plant for cats. ...
• Cayenne Pepper. ...
• Chamomile. ...
• Dandelion. ...
• Echinacea. ...
• Garlic. ...
• Lavender. ...
• Lemon Balm
• B. Oak Trees: These trees are famous for hard-grade wood red, or white color. ...
• Maple Trees: The good thing about Maple is that it is less expensive than most of the alternatives of the same hardness and durability. ...
• Pine Trees: Not far behind Maple, are the Pine trees.
• 23. They are present in water.
• Also known as the aquatic plants.
• Mostly are not green in colour due to absence of sun.
• Photosynthesis cannot be taken place in such plants.
• Are mostly weeds,wavy and sticky.