Fenestra In histology, fenestrÃ¦ are small pores in endothelial cells that allow for rapid exchange of molecules between sinusoid blood vessels and surrounding tissue. These pores may enlarge and contract at the action of various stimuli such as noradrenaline.FenestrÃ¦ is a Latin word that means window.
Global Warming. An issue of major concern is the possible effect of the burning of fossil fuels and other contributers to the increase of carbon dioxide in the atmosphere. The action of carbon dioxide and other greenhouse gases in trapping infrared radiation is called the greenhouse effect. It may measurably increase the overall average temperature of the Earth, which could have disastrous consequences.
Humankind has the ability to destroy the planet, but we can also help to protect and sustain it. Global warming is too massive a problem for one person to solve, but you can create positive change by making environmentally-conscious personal choices and inspiring others to take collective action. This article outlines ways you can help prevent Earth from warming further.