How does non-human life in an urban ecosystem differ from non-human life in an undeveloped forest ecosystem?

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin

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.