Answer: C. The sign of the enthalpy of the reaction reverses.
Explanation: Enthalpy of a reaction is the net heat absorbed or released during a chemical reaction.It is represented by 
. It is negative for exothermic reactions in which heat is released and is positive for endothermic reactions in which heat is absorbed.
When a chemical reaction is reversed the heat of the reaction changes its sign.
The decomposition of calcium carbonate is an endothermic reaction as heat is required to break the bonds and thus energy is absorbed.
When the reaction is reversed, the reaction becomes exothermic as now bonds are getting formed and energy is released.
You can infer that the birds once had a common ancestor but became separated. Mutations in copying their genes stacked and caused changes in the beaks so the birds could be more well off or better adapted in their new environment.
Dense connective tissue, also called dense fibrous tissue, is a type of connective tissue with fibers as its main matrix element. ... Dense connective tissue forms strong, rope-like structures such as tendons and ligaments. Tendons attach skeletal muscles to bones; ligaments connect bones to bones at joints. I hope this helps
The correct answer is "Cellular respiration does not consume carbon dioxide".
Cellular respiration refers to the set of chemical reactions by which cell harnessed energy from nutrients and convert it to ATP (also called as energy currency of the cell).
It is essential for the cell as it generates ATP which is used in all the processes such as DNA replication, repair, etc.
Cellular respiration uses oxygen and releases carbon dioxide as a waste product.
Oxygen is provided by air we inhaled and carbon dioxide is released as a part of exhaled air.
The general equation of cellular respiration can be written as:
C_{6}H_{12}O_{6} + 6O_{2}C
6
H
12
O
6
+6O
2
→ 6CO_{2} + 6H_{2}O + ATP6CO
2
+6H
2
O+ATP
