Jonathan is tossing a fair coin 40 times. He records each toss in the table below. Outcome Frequency

H 15

T 25

What is the difference in the theoretical probability of tossing a head on the coin and the experimental results Jonathan recorded?

How does land development destroy ecosystems? it increases human carrying capacity too rapidly. it converts them into residential or agricultural areas. it forces humans to import non-native plants and animals. it expands the natural range of native wildlife species.

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.

Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d