See in more detail the photochemical phase. It is also called the "clear phase" of photosynthesis, as its occurrence is entirely dependent on light. As this is a stage that counts on the participation of chlorophyll molecules, it happens inside the tilacoids, in whose inner faces of their membranes the molecules of this photosynthesizing pigment are "anchored".

In our daily lives, we often come across hygiene habits that we have acquired from children, according to our parents' guidelines, or even during the experiences (good or bad) we have been through. On the other hand, there are those who do not care much about these issues. For example, do you wash your hands regularly?

Filtration: is used for the separation of heterogeneous mixtures consisting of a solid and a liquid component or a solid and a gaseous component. The mixture must pass through a filter, which is made of porous material, and larger diameter particles are trapped in the filter. For a material to be used as a filter its pores must have a very small diameter.

The ozone layer is a "layer" of this gas that surrounds the earth and protects it from various types of radiation, the main one being ultraviolet radiation, which is the main cause of skin cancer. In the last century, due to industrial development, products that emit chlorofluorocarbons (CFCs) have been used, a gas that upon reaching the ozone layer destroys the molecules that form it (O3), thus causing the destruction of this layer of the atmosphere.

There are two classes of fish: the class of chondrictes (Greek khondros: 'cartilage'; and ichthyes: 'fish'), or cartilaginous fish, and the class of osteictes (of Greek osteon: 'bone'), or bony fish. Bone fish are the most abundant in number of known species, representing about 95% of the total of these species.

It's not global warming or Wi-Fi: pesticide and fungicide combination is contaminating bee pollen You may have heard about the disappearance of bees. It's not legend or conspiracy theory: In the last six years in the US, over 10 million hives have been decimated, causing more than $ 2 million in damage and incalculable damage to the ecosystem.