Question

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67
M40
R
Science - VII.p...
)
Take two en
cans win he has serta termometer mrough ae nule in each us Leave the
cans in the sun for an hour or two and note the temperature of the water in each
can
(a)
(2)
(b)
In which can water is hotter and why?
Write any of the changes that heat causes in substances.
Write true or false for the following:
(1)
2.
(a)
(5)
(i)
The heat from the sun reaches us by radiation.
(iv)
One Celsius scale the boiling point of water is taken as 100°C
Substances through which heat does not flow easily are called conductors
Black objects are best radiators of heat.
Heat causes fall in temperature.
Identify the symbols.
(3)
(v)
3.
(a)
(0)
(11)
Hut
th
(1)
(b)
Which of the following is a closed circuit?
(0)
(1)
(c)
Write one use of electromagnet​

Answer 1

Answer:

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Explanation:

Entamoeba histolytica is an anaerobic parasitic amoebozoan, part of the genus Entamoeba.[1] Predominantly infecting humans and other primates causing amoebiasis, E. histolytica is estimated to infect about 35-50 million people worldwide.[1] E. histolytica infection is estimated to kill more than 55,000 people each year.[2] Previously, it was thought that 10% of the world population was infected, but these figures