Lenny needs to quickly train his cows to use one specific field when they graze. The reinforcement that will allow the cows to learn most quickly is reinforcement.

9) a & b

10) true.

11) false.

12) false.

13) true.

14) false.

15) true.

16) true.

don't worry, i'm here to you with your struggles!

good luck!

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.

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.