15. Where Dimitri lives, the climate is humid much of the year. In some places, moss grows in the shade and between cracks in the pavement.
The simplest plant, such as mosses and liverworts, are examples of which
of the following plant groups?*
vascular plants
O nonvascular plants
gymnosperms
O angiosperms

Which of the following is an example of a parasite?

Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.

For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3–c4 (i.e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.