Why is some KOH placed in a small test tube in the flask with germinating seeds in the
experiment to demonstrate the occurrence of respiration in germinating seeds?
a. To provide oxygen required by the seeds for respiration
b. To absorb carbon dioxide and create partial vacuum in the flask
c. To absorb water from the seeds to make them dry
d. To make the air present in the flask alkaline
Answers
Answer:
Effects of disaster
We have understood the serious effects of disaster with the help of above-mentioned
questions. Collapsing of bridges, flooding of coastal villages, shortage of food are some
of the problems of floods. Collapsing of houses, developing cracks in land are some of the
effects of earthquake. Disasters like forest fire and drought also adversely affect the envi-
ronment. However, what is exact nature of these disasters? Whether there are any changes
in nature before the occurrence of disasters? For how long the effects occur after the oc-
currence of disaster? How? It needs to be think over all these aspects. This helps us to
understand the nature and gravity of the disaster.
Disasters definitely affect the economy of the nation. That effect is always relative to
disaster and economy i.e. if any port is destroyed, there are long lasting effects on econo-
my due to huge expenses on its reconstruction. An effect of disaster on social leadership is
that if local leadership is not strong enough, citizen become confused. It affects their par-
ticipation in rescue and rehabilitation activities. Administrative problems arise during the
disaster. If local governing bodies are affected by disasters, related departments cannot
answer the problems of disaster efficiently. All the concerned departments are affected by
disaster and thereby entire system collapses.
Answer:
answer is D
Explanation:
b. To absorb carbon dioxide and create partial vacuum in the flask