2. brittany wanted to find out which wheels were best for her skateboard. she purchased 4 sets of new

wheels of different brands. she and a friend set up a course on her driveway. brittany rode through

the course 5 times on each set of wheels. her friend timed her with a stopwatch and recorded the

times. they averaged the times for each brand of wheels.

a. independent variable

b. dependent variable -

c. experimental group -

d. control group -

e. constants -

a. 35°c

b. 25°c

c. 10°c

d. 40°c

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.  

for a different answer set the answer would be because the oxygen in the water had depleted (apex)

answerhomologous structures;