1) The main function of the circulatory system is to do which of the following?
A. Carry blood throughout a person's body
B. Take in oxygen for transport to the body
C. Distribute blood to the heart
D. Keeps a person's heart beating

What were some challenges leonardo da vinci faced. How is power distributed in Brazil (Unitary, Confederation, or Federal)? Are the two given triangles similar? Show your work to support your answer.Helpppp please As we know, the moon is a satellite of our earth, what is thetheoretical period of the moon? The average radius of themoon's orbit is 3.84 108 m and the mass of the earth is 5.97 x1024 kg (in hours, G = 6.67 x 10-9 N (m/kg) 3). In his bank account, Jean-Paul has a balance of $0.00His friend Albert has a bank balance of -$11.10Which friend's bank account has more debt?Choose 1 answer:A. Jean-PaulB. AlbertWhich friend's bank balance has a greater absolute value?Choose 1 answer:A. Jean-PaulB. Albert Complete the following statement.Zero pairs are two numbers that ___ to get zero.A: subtractB: multiplyC: divideD: add What are the building blocks of proteins? If all proteins are made of the samebuilding blocks, how can there be so many different types of proteins with differentfunctions? Help asap i will do brainlist and everything HOLA IM DORA AND IM GONNA NEED YOUR HELP FIGURING OUT THIS EQUATION?..... MUCHAS GRACIAS. what are the x-intercepts of the graph of y=x^2+5x+6?A. (-2,0) and (-3,0)B. (6,0) and (5,0)C. (2,0) and (3,0)D. (-6,0) and (-5,0) which matrix represents the system of equations shown below ? 4x-2y=5 5x- y=8 According to the passage, what are the services a monarch must provide for his people? PLEASEE HELPPPP WILL GIVE BRAINLEAST IT IS URGENT!!!!Which equation models the trend line?A- y = 1.3x + 2B- y = 1.3x + 2C - y= 1.3x 2D- y = 1.3x 2 HELP ME PLEASEEEEEE Which fraction names the shaded part of the set? 6x + 6y = 6 6x + 3y = 12 a commander in the army of ancient rome which of the following is an irrational number? Select all that apply.What happened at the end of the Middle Ages?People wanted to explore new lands.The lower classes rebelled against the upper classes.Barbarians attacked the kingdoms.People began to question authority.The feudal system ended. solve x 3+3(x+2)=-24 A museum requires a minimum number of chaperones proportional to the number of students on a field trip. The museum requires a minimum of 333 chaperones for a field trip with 242424 students.