They help convert nitrogen to nitrate which is usable by living beings. (Living beings can't use regular nitrogen)
It would b B.physically because solution is a mixture and mixture is formed by physical change not by chemical
Answer:The process of photosynthesis is energy-releasing because the process converts light energy into free energy that can be
used for cell functions.
Explanation:
Photosynthesis is a process used by green plants to convert light energy into chemical energy that is later released to fuel the organisms' activities. ... In these light-dependent reactions, some energy is used to release electrons from suitable substances, such as water, producing oxygen gas.
B. only 3% of water on earth is fresh
Answer:
The correct answer would be calcium ion and cAMP.
Secondary messengers refers to the intracellular signaling molecules which pass the signals from the receptors located on the surface of the cell to the target molecule present within the cell.
The secondary messengers can be classified into three major class:
- Cyclic nucleotide for example cAMP (cyclic adenosine monophosphate), cGMP (cyclic guanosine monophosphate)
- DAG (diacylglycerol) and IP₃ (inositol triphosphate)
- Calcium ions (Ca⁺⁺)
Hence, from the given options, calcium ion and cAMP would make the correct choice.
