1. When exercising, a person's breathing rate and heart rate increase in order to supply the muscles with enough oxygen to produce ATP. What systems
are involved in this scenario?

2. When a person is cold, blood vessels near the surface of the skin contract
and less heat is lost to the environment. What systems are involved in this
example of temperature regulation?

hi i come from a mixed indonesian and canada family

Nice to meet you

my father is from canada

my mother is from indonesia

food in Indonesia is very good

the scenery there is also beautiful

chicken noodle is good

just look at the internet chicken noodles

surely you want to try it too

I've tried it while living in Indonesia

tempeh in Indonesia is also delicious

you will definitely want to try it too

I'm addicted to eating noodles chicken haha

I come from Canada - Indonesia

are you annoyed with me??

im sorry but please don't report it make the best answer i need it

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.