Answer:
Explanation: At the molecular level, the universal genetic code and homologous molecules provide evidence of common descent.
Americium, the atomic number is 93
In a closed ecological system, any waste products produced by one species must be used by at least one other species. If the purpose is to maintain a life form, such as a mouse or a human, waste products such as carbon dioxide, feces and urine must eventually be converted into oxygen, food, and water.
Something thas has mass and occupies space is called matter
Answer:
because some genes expressed in neuron is not expressed in WBC's.
Explanation:
Every cell in the body contains the same DNA sequence and the same gene but all the genes are not expressed in a cell. Each cell expresses a particular set of genes according to the function they perform.
For example, a red blood cell will express a gene that code for hemoglobin to carry oxygen but white blood cell do not carry oxygen, therefore, it will not express the gene of hemoglobin rather it will express a gene that make proteins that can be used to kill pathogens.
Therefore according to the function of cell genes are expressed so neurons express genes that make neurons receive and respond to electric signal.
