Which of the following types of pathogens can only reproduce itself if it atakes over host cells?
- fungi
-bacteria
-virus
-protozoa

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

Why did the federal government end its support of yucca mountain as a site for long-term storage of nuclear water

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.