Erzsebet Frey

Erzsebet Frey (Eli Frey) is an ecologist and online entrepreneur with a Master of Science in Ecology from the University of Belgrade. Originally from Serbia, she has lived in Sri Lanka since 2017. Eli has worked internationally in countries like Oman, Brazil, Germany, and Sri Lanka. In 2018, she expanded into SEO and blogging, completing courses from UC Davis and Edinburgh. Eli has founded multiple websites focused on biology, ecology, environmental science, sustainable and simple living, and outdoor activities. She enjoys creating nature and simple living videos on YouTube and participates in speleology, diving, and hiking.

Definition of mutualism in biology

ECOLOGY / Erzsebet Frey

Mutualism, or interspecific cooperation, is the way in which organisms of different species exist in a relationship where each benefits from the activity of the other. Mutualism as the term was first introduced by Pierre Joseph Van Beneden in his 1876 book Animal Parasites and Messmates. Mutualism isn’t synonymous with symbiosis, cooperation, or facilitation, even […]

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What solar panels are made of?

Solar panels are made of crystalline silicon or thin-film and therefore those are the two main types of solar panels that are used in rooftop and outdoor installations, crystalline silicon, and thin film. Crystalline silicon solar panels are the most common, they have the appearance of blue or black rectangular grids of smaller squares. These