In talking with grandma on the phone, little marcelo suddenly exclaims, "oh, look at that pretty red bird! " when his grandmother asks him to describe the bird, marcelo says, "out there, out there! right there, grandma! " he finally gets frustrated and hangs up. this is an example of:

bacteria – a word that often brings out a sense of uneasiness in most of us are, in fact, one of the earliest forms of life. it can be quite unnerving to know that there are bacteria all over your skin, hair, and even inside the body. but only a few species of bacteria are dangerous. the majority of bacteria are good, and without them, life on earth wouldn’t be possible. let’s learn more about how are bacteria essential for you to survive.

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;