Those two are the muscular system and the excretory system because you use your muscles to push up and down and your excretory system produces the sweat you use while doing them
Answer:
a. Layering of bamboo strips
Explanation:
The only person who can write a long paragraph about how much YOU love YOUR bf is YOU.
Answer: (C) pursue pleasure and satisfy biological drives
Explanation: The id is Freud's first division of the mind to develop, contains two biological drives; sex and agression, which are the source of all physic or mental energy.