Answer:
When conducting an investigation using live animals ,we should ensure proper treatment of the animals .
They should be treated with utmost care and attention and the evidences should be carefully observed and taken note of.
We should ensure we maintain a proper hygiene and wash our hands after the careful analysis
The correct answer is B. Thymus gland: enables immature lymphocytes to mature into T cells
This causes a phenomenon referred
to as valve regurgitation. This reduces the flow of blood in the blood vessels
and causes a reduction in the oxygenation of tissues of the body. This causes homeostatic signaling by the body resulting
in the exertion
of the heart pumping and increased breathing (heavy breathing). This is why
some of the symptoms include shortness of breath,
fatigue,
and light-headedness.