1. Which radioisotope of carbon is used in carbon dating? a. Carbon-12
b. Carbon-14
c. Carbon-13
d. Carbon 12 and 14
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Animals such as pronghorn antelope, bison ans badgers dot to the landscape. where are these animals located?

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

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?