What does a positive test for simple sugars look like?
ored
ogreen, red or orange
violet
brown

Green, red or orange

Explanation:

Benedict's solution is used to test for simple sugars, such as glucose. It is a clear blue solution of sodium and copper salts. A potion of sugar solution is added an equal amount of benedict's solution and heated to boil. In the presence of simple sugars, the blue solution changes color from blue to green, yellow, and red, depending on the amount of sugar.  When the solution turns to orange, it indicates that there is presence of reducing sugars.

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 !

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.