5. If a scientist were to study the organisms in your ecosystem, what questions might they ask? Propose two questions. Think about the organisms that live in your ecosystem and what things
about them might be interesting to study. (4 points)

20 the compound al(nh3)2 has atoms of nitrogen.

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.

When ash and dust begin to settle on the ground, they eventually become compacted by