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Some teenage boys on spring break were canoeing on a river when their canoe overturned. A nearby fisherman overheard the teens’ cries for help and immediately dove into the river to rescue them. The fisherman hit his head on some hidden rocks and suffered a head injury. If the fisherman sues the teens to recover damages and prevails, what is the likely reason?

Under the Federal Tort Claims Act, with certain exceptions not relevant here, the federal government is liable only for negligence. A federally owned and operated nuclear reactor emitted substantial quantities of radioactive matter that settled on a nearby dairy farm, killing the dairy herd and contaminating the soil.  At the trial of an action brought against the federal government by the dairy farm’s owner, the trier of fact found that the nuclear plant had a sound design but that a valve made by the Acme Engineering Company had malfunctioned and allowed the radioactive matter to escape, that Acme Engineering Company is universally regarded as a quality manufacturer of components for nuclear plants, and that there was no way the federal government could have anticipated or prevented the emission of the radioactive matter. If there is no other applicable statute, for whom should the trial judge enter judgment?

Which type of water is has the following characteristics: high nutrients, low dissolved oxygen and low light penetration caused by densely populated algae?

What are pseudopods primarily used for in amoebas? 

Arthropods have four extant classes. (still alive today). Which class below meets the following description?a. Has 3 body regions (head, thorax and abdomen)b. Has uniramous appendagesc. Includes grasshoppers, beetles and butterflies.d. Known to have a total of 6 legs.

Which of the following is NOT an adaptation that helped plants overcome challenges of living on land?

Secondary succession occurs _____. (Check all that apply)

Throughout time, Earth has experienced a fluctuation in CO2 levels. Explain how CO2 has affected the Earth’s surface temperature. Explain using complete sentences.

Name 4 of the 5 classes of Chordates.

Cladogram.png The common ancestor shared by snake and chimp is at point ______ on the phylogeny shown.