Choose one of these examples to create a system. explain how the flow of matter and energy occurs in the system. sun, salmon, maple trees, Bears, plankton, Wales, grass, cows, human, shrimp, caterpillars, finches (small birds), hawks

Invasive species are one of the major threats to biodiversity. these species multiply quickly and compete with native species for food, sunlight, spac and other resources. on the map, determine the area where native species will have limited resources available to them due to invasion threat from invasive species threat very low low medium high very high

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above