Which statements describe functions of the backbone? Check all that apply. o It supports the body's weight.
O It helps to break down food.
It surrounds and protects the brain.
It replaces the spinal cord in vertebrates.
O It allows for flexibility and movement.
It helps regulates water balance.
The answer is it supports body weight and it allows flexibility and movement

A and E

Explanation:

Backbone is the part of skeletal system and is made of 26  vertebrae in total. The backbone and bones of lower limbs together serve to support the body's weight. Backbone surrounds and protects the spinal cord. Since the vertebrae of backbone are joints together by synovial joints, it allows the flexibility and movement of organisms.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

it is b that is the answer.