DDT (dichlorodiphenyltrichloroethane) is a synthetic pesticide once widely used to control insect-borne diseases like malaria. Its environmental persistence and harmful effects led to bans in many countries.
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Fruits are mature ovaries of flowering plants, containing seeds. They develop from fertilized ovaries and serve as a means for seed dispersal. Fruits come in various types, shapes, and flavors.
The pancreas is an organ in the digestive and endocrine systems. It produces digestive enzymes for breaking down food in the small intestine and releases insulin and glucagon to regulate blood sugar.
A food chain depicts the transfer of energy in an ecosystem. It starts with producers (plants), followed by herbivores (primary consumers) and carnivores (secondary and tertiary consumers), illustrating the feeding relationships.
Ozone is a molecule composed of three oxygen atoms. It forms a protective layer in Earth’s stratosphere, blocking harmful ultraviolet radiation. Ground-level ozone is a component of smog and can be harmful to health.