1. Information being passed from one person to another? That is, does communication involve information transmission? 2. One mind affecting another? That is, is it only communication if one person’s mind affects another’s? 3. Transmission of information, ideas, emotions & skills via symbols Does communication necessarily involve symbols? 4. Transmission of a message from a source to a receiver with conscious intent to affect the latter’s behavior Does it only count as communication if it’s intentional?

the invasive species was introduced due to commercial purpouses, as there was a demand for fur clothes and hence, a business opportunity connected to this product. actually, it was when the nutrias scaped, causing harm to the us ecosystems when they acquired the status of invasive species. in this case they have caused an environmental problem, but it could have affected also economic interests or even human health.

this statement is true.

forests are public goods, available for everybody. when usage of such a good becomes interesting for consumers and its usage increases, there can be a risk of overexploitation. it is a non rival good therefore, if one person consumes the good it does not reduce the availability for subsequent consumers.

these caracteristics require the establishment of measures in order to prevent the destruction of a commonly owned space, for example, to restrict the amount of people that have access to the same time.