Why are G protein know as coupled receptors

How would you take a difficult subject matter - such as poaching, deforestation, or climate change and communicate it in a kid-friendly way

My question says on my assignment. read the following scenarios and decide which of the properties of life are being described. the first one is. katherine stopped on the way to school to grab some donuts. 2. because a dog cannot sweat, it has to pant in order to stay cool. 3. an elephant trun had no bone but 4,000 muscles. i have no idea what i am supposed to anwer. i can't find the answer in my notes or book that i can understand anyway

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment