Do #1 and fill in the blanks

Archaebacteria use for movement. celia flagella pili cell walls

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.

which is an effect of short-term environmental changes? a) adaptation b) speciation c) extinction d) death (5 points)