Biology, 30.01.2020 23:02 madisontrosclair2
Dr. bennett does an experiment that leads him to invent a machine that can turn salt water into fresh water. it is very slow and costly. he continues his research to improve on his original invention and finds a way to make it work more quickly and inexpensively.
which of the following ideas does this illustrate?
a. scientific research can be based on the results of previous experiments.
b. scientific research is only useful for inventing machines.
c. scientific research is always expensive and pointless.
d. scientific research is never based on the results of previous experiments.
Answers: 1
Another question on Biology
Biology, 21.06.2019 22:30
Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials
Answers: 2
Biology, 22.06.2019 11:00
Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit
Answers: 3
You know the right answer?
Dr. bennett does an experiment that leads him to invent a machine that can turn salt water into fres...
Questions
Mathematics, 07.10.2019 19:50
English, 07.10.2019 19:50
Mathematics, 07.10.2019 19:50
Mathematics, 07.10.2019 19:50
Mathematics, 07.10.2019 19:50
