In Ventilation studies, a radiopharmaceutical is inhaled to obtain a lung scan.
Chloroplasts are like solar panels because they both convert energy.
<u>Definition</u> :
Gently moving air is known as wind .
Birds and mice compete for the same food. If the number of birds increases by a lot, there will be less seed for the mice to feed on. The mice will compete for the remaining seeds and fewer mice will survive this would lead to the number of mice decreasing.
Human evolution and natural selection reduce susceptibility of disease. A simple explanation would be saying that the life forms that are not immune to the disease pass away, then the ones that are immune or survive genetically give this trait to their offsprings, leaving only life forms that are immune. This does not occur so easily and is a long process, but it is a simple explanation.