Which animal adaptation happened before the others? A. Reproduction on land
B. Backbone and skull
C. Development of a coelom
D. Lungs

Differences between compact bone and cartilage

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

Why does the skin of your finger shrink when you wash clothes for a long time?