Carlos reviewed the data on water use in the united states. carlos wanted to conserve water so he and his father fixed all the leaks in the house and garage. carlos hypothesized that if they fixed their leaks, they would not use as much water as before. what must carlos do to make this a real experiment?
a) determine his manipulated variable.
b) draw a conclusion from the data in the bar graph.
c) collect and analyze data before and after the leaks are fixed.
d) make a prediction about the amount of water used before fixing the leaks.

The correct option is C) Collect and analyze data before and after the leaks are fixed.

Explanation:

The hypothesis that Carlos has generated is that if the leaks in the house are fixed, then the water consumption would be reduced. To check the validity of this hypothesis Carlos must design an experiment in which the dependent variable should be water consumption and the independent variable should be the leaks in the house.

To deduce the results, Carlos must check the usage of water for a fixed period before fixing the leaks and then check the usage of water after fixing the leaks for the same period.

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !

straight or amphibians are homeothermic to thermal