What is the smallest height needed to make a wave? A
6 feet

B
90 millimeters

C
20 millimeters

D
any height

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

vapour or gas assuming atmospheriv pressure

your answer is c! hope this : )

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.