Idiom
When we consume the goat or sheep beef then we are

None of these
Secondary consumer
Primary consumer
Tertiary consumer

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Idiom
White blood cell act

As a medium for oxygen transport from lung to tissues
As a defence against infection
For clotting blood
As a source of energy

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Idiom
Which statement regarding the mammalian heart is correct?

Blood is pumped from the heart via the atria
In the adult heart, blood in the right chambers of the heart cannot enter the left chambers without passing through the lungs
Oxygen-loaded blood moves only through the right side of the heart
When the right atrium contracts, it forces blood into the left atrium

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