67 million years ago in the form of phyollths (small sllica flecks in grass that make it difficult to digest)
Explanation:
meiosis help organism to replace worn out tissues
<span>D. serotonin</span>
Neurotransmitter are biochemicals and compounds transported from one neuron to another.
Neurons are specialised cells that have dendrites, axons and terminal buttons that sends and receives stimuli from the environment and transduces it into a meaningful information and understand the complexities which the brain now functions.
Answer:
B. Archaebacteria
Explanation:
I've never heard of archaebacteria, I've always said archaea, but archaea are known for living in harsh conditions including hot springs, areas with a high concentration of salt, and deep underground.