30 ponits best answer
choose 7 out of the following 10 situations and use the internet to research and write an answer to the two questions. remember to write the answers in your own words and to cite the sources of your information.
what two (or more) systems are involved in this process?
how are they involved?
situations
playing a video game
getting energy to sit through class by eating cereal and a banana
going through puberty
touching a hot pan and yanking your hand away
jumping up and down
drinking water on a hot day
sneezing
blushing
hitting your head on the top of the car as you get into it
breathing harder during a jog

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

Explain why the plants cortex would serve as the best food source for animals

Freckles are a dominant trait in humans. both of the girls have the genotype ff for freckles. if either one marries a man with no freckles, what are the chances that their children will have freckles?