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Tsunamis

Crustal movements under the oceans can displace water bodies, producing huge waves, called tsunamis, as high as 30 meters. Giant waves can be produced by three types of phenomena: 1) Volcanic eruptions inject tons of lava into the ocean floor, generating devastating waves.
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Transgenic mosquitoes are bred to fight malaria

Scientists produce altered insects to produce mainly males - the idea being that this leads to the disappearance of the species. Biologists announced on Tuesday, June 11, 2014, that they have developed a new weapon against malaria. They created genetically engineered mosquitoes to produce mainly male offspring - eventually leading to the disappearance of the entire insect population.
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Biology

This section is dedicated to teaching Biology (high school content). Click on the desired subject name to view its content. Introduction to Living Beings Classification of Living Beings Lineu and the Binomial System Popular Names Phylogeny Cladograms General Characteristics Prokaryotic, Eukaryotic and Incomplete Cells Animal Cell Plant Cell Viruses Viruses living or not?
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Savannas

Savannah is a name given to a type of vegetation cover usually consisting of grasses and sparse trees. The topography is generally flat with tropical climate, presenting two well defined seasons, one rainy and one dry. Savannas occur mainly in the intertropical zone of the planet, so it receives a huge amount of sunlight.
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Physical state changes

The passages between the three physical states (solid, liquid and gaseous) are called physical state changes. Look at the following diagram and then read the explanations of each of these changes. Have you ever seen how on a hot day a piece of ice melts right out of the freezer? In this case, the solid state water quickly changes to the liquid state.
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