Thats false, plants and animals need a lot of sun and WATER to survive so a tropical climate is better
When the parents reproduce, they pass on traits to their offspring
The answer is the endogenous opiate.
The human body naturally produces its own opiates like substances and uses them as neurotransmitters. These substances include endorphins, enkephalins, and dynorphin, often collectively known as endogenous opioids. Endogenous opioids modulate our reactions to painful stimuli.
Answer:
lanthanoids and actanoids I believe.