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Advanced Placement (AP) United States Government and Politics (often shortened to AP Gov or AP GoPo and sometimes referred to as AP American Government or simply AP Government) is a college-level course and examination offered to high school students through the College Board's Advanced Placement Program.
A Closer Walk is Robert Bilheimer's documentary film about the global AIDS epidemic. [1] Narrated by Glenn Close and Will Smith, A Closer Walk features cinematography by Richard D. Young, interviews with the Dalai Lama, Bono, and Kofi Annan, and musical contributions by Annie Lennox, The Neville Brothers, Dido, Eric Clapton, Moby, Geoffrey Oryema, and Sade.
Another insect known to walk on the water surface is the ant species Polyrhachis sokolova. The pygmy gecko (Coleodactylus amazonicus), due to its small size and hydrophobic skin, is also able to walk on the water surface. [2] According to biophysicist David L. Hu, there are at least 342 species of water striders. [3]
Aquatic science is the study of the various bodies of water that make up our planet including oceanic and freshwater environments. [1] Aquatic scientists study the movement of water, the chemistry of water, aquatic organisms, aquatic ecosystems, the movement of materials in and out of aquatic ecosystems, and the use of water by humans, among other things.
(Changed for the 2020 exam) [1] 55 multiple choice questions in 60 minutes 50% of score Each question will have 4 options. There will be 2 text-based sources, each one accompanied by 2–2 questions. There will be 3 quantitative sources, each one accompanied by 2–2 questions. 4 free response questions in 90 minutes 50% of score
In biology, being semi-aquatic refers to various macro organisms that live regularly in both aquatic and terrestrial environments. When referring to animals , the term describes those that actively spend part of their daily time in water (in which case they can also be called amphibious ), or land animals that have spent at least one life ...
An aquatic ecosystem is an ecosystem found in and around a body of water, in contrast to land-based terrestrial ecosystems. Aquatic ecosystems contain communities of organisms—aquatic life—that are dependent on each other and on their environment. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. [1]
Practical limitations, most notably the weight of water (1 kilogram per litre (8.345 lb/U.S. gal; 10.022 lb/imp gal)) and internal water pressure (requiring thick glass siding) of a large aquarium, restrict most home aquaria to a maximum of around 1 cubic metre in volume (1000 L, weighing 1,000 kg or 2,200 lb). [47]