the transfer of pollen from the anther to the stigma of the same plant (self-pollination) or of...
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Type: Glossary
substances that have a harmful effect on the environment and also on human health.
Type: Glossary
the introduction of harmful substances (pollutants) into the environment.
Type: Glossary
(also called macromolecules) large, more complex molecules formed when monomers join together....
Type: Glossary
an inorganic compound with the formula KOH, commonly called caustic potash. It can be used to...
Type: Glossary
water that falls to earth in any form, such as rain, snow, hail and sleet.
Type: Glossary
teeth found at the back of the mouth just in front of the molars in the mammalian jaw, used for...
Type: Glossary
a thin, flexible layer of the plant cell wall inside the middle lamella. It consists mainly of...
Type: Glossary
(also called herbivore) an animal that feeds directly on plant matter.