Some chemical reactions can produce spectacular displays of energy. In chemical reactions, some chemical bonds are broken, and some bonds are
formed. Choose the statement that best reflects how energy is involved with
chemical bonds.
A.
B.
C.
D.
Energy is needed to break bonds.
Energy is released when bonds are broken.
Energy is formed in the breaking of bonds.
Energy plays no role in chemical bonds.
Vhich statement do you agree with? Explain your thinking.

energy is need to break bonds

Explanation:

Compounds form and are stable when they have less energy than the free atoms. Bond energy (in covalent compounds) describes the strength of a bond. The higher the energy holding the atoms together, the more is required to break the bond.

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 !