define the following
Answers
1. the transfer of pollen from an anther to the stigma in angiosperms or from the microsporangium to the micropyle in gymnosperms
2. Exhalation is the flow of the breath out of an organism. In humans it is the movement of air from the lungs out of the airways, to the external environment during breathing. ... Exhalation has a complementary relationship to inhalation which together make up the respiratory cycle of a breath.
4. one complete pulsation of the heart
5. the discharge of urine from the body : the act or process of urinating
6. Egestion is the discharge or expulsion of undigested material (food) from a cell in case of unicellular organisms, and from the digestive tract via the anus in case of multicellular organisms.
7. The transfer of blood or blood components from one person (the donor) into the bloodstream of another person (the recipient). Blood transfusion may be done as a lifesaving maneuver to replace blood cells or blood products lost through bleeding or due to depression of the bone marrow. Transfusion of one's own blood (autologous) is the safest method but requires advanced planning, and not all patients are eligible for it. Directed donor blood allows the patient to receive blood from known donors. Volunteer donor blood is usually most readily available and, when properly tested, has a low risk of side effects.
8. the action of clearing a wide area of trees.
9. the action of inhaling or breathing in.
10. Wastewater (or waste water) is any water that has been affected by human use. Wastewater is "used water from any combination of domestic, industrial, commercial or agricultural activities, surface runoff or stormwater, and any sewer inflow or sewer infiltration".[1] Therefore, wastewater is a byproduct of domestic, industrial, commercial or agricultural activities. The characteristics of wastewater vary depending on the source. Types of wastewater include: domestic wastewater from households, municipal wastewater from communities (also called sewage) or industrial wastewater from industrial activities. Wastewater can contain physical, chemical and biological pollutants.
11. waste water and excrement conveyed in sewers.
12. Afforestation is the establishment of a forest or stand of trees in an area where there was no previous tree cover. ... In the UK, afforestation may mean converting the legal status of some land to royal forest.
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