Use the information and pie chart to answer the question. Community members are concerned about the construction of a new nuclear power plant. They argue that people who live near a nuclear
power plant have increased exposure to nuclear radiation. The pie chart shows the composition of the radiation an individual is exposed to
over a lifetime.
Radon gas
from the ground
40%
Rocks
15%
Nuclear power and
weapons tests other sources
Artificial sources
1896
Human body
and food
15% Cosmic rays
129
Medical
Which of the following is the BEST opposing argument?
A. People are exposed to more radiation from radon gas from the ground than from the natural radiation in food and drink.
OB. The amount of radiation from a nuclear power plant is small compared to natural radiation exposure from the human body and food
and radon gas from the ground.
OC. Radiation occurs naturally in food and drink and in the ground.
O D. Artificial radiation is used in medicine so it must be safe.

Drag each label to the correct location on the image. g organisms adopt different strategies and structures to make sure their offspring it uses. herds young into center of group produces many offspring at once to protect against high predation risk protects offspring until environmental conditions are ideal for growth coo b 13 1994 7 odos si . an . i

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.

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.