A. is a microscopic single cell organism. b. It has a ,rounded and dense nucleus and a number of small bubble-like
c. It can constantly change its own
d. They have many finger like projections called to capture their food.
e. The trapped food is caught in the and is egested as waste and thrown out of it.
f. Assimilation is the process by which the use of substances to build substances required by the is called assimilation.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

a. 35°c

b. 25°c

c. 10°c

d. 40°c

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