According to model 3. During the child birth the stimulus is baby pushes against the cervix and the response would be hypothalamus oxytocin to male uterine walls contract.
Explanation:
The first contractions of the stimulus (labor) pushes the baby towards the cervix that is the lowest part of the uterus. Normal childbirth is done by positive loop. A positive feedback loop is the change in body status than a return to homeostasis. 
One of the best example for positive feedback system is child birth. During labor, a hormone called oxytocin is released which intensifies and speeds up contractions.
Child birth will eventually stop the stimulus and stop the child birth feed back loop. 
 
        
             
        
        
        
Answer:If we were to remove just one level of organization all the other levels would fall apart. It would then become very difficult to make any decisions without all the levels put together as one.
Explanation:
 
        
             
        
        
        
Answer: C
Explanation:
Hi, the answer to this problem is C. 
This is because it is asking for the complementary strand. 
Basically, the nucleotide A goes with T, and C goes with G, and both vise versa. 
Since this is DNA, A goes with T. 
So you would match it up. For the first one, we have C. That means for the first letter of the correct answer, it should be G. Do this until you get through the whole sequence, and eventually, you will get the answer C. 
Hope this helps!
 
        
                    
             
        
        
        
6 m/s
This type of collision is a <u>Inelastic collision </u>
Explanation:
We begin by finding the momentum of the initial train car;
Remember that momentum is given by the formulae mass (kg) * velocity (m/s)
Therefore;
Momentum = 6000 * 10
= 60,000 kg⋅m/s
The other car has zero momentum because;
4000 * 0 
= 0
When the two train cars collide, the total momentum will be;
60,000 + 0 = 60,000
Therefore to find the velocity, well use the same formulae;
p = mv  whereby;
p – momentum
m – mass 
v – velocity
60,000 = (6000 + 4000) * v
v = 60,000 / 10,000
v = 6
= 6 m/s
This is an elastic collision because we are assuming that no energy is lost in the collision. Most collisions, however, are not elastic but rather inelastic. In inelastic collision some of the kinetic energy is lost to the environment in some other form of energy such as heat energy.
Learn More:
For more on elastic collisions check out;
brainly.com/question/10864123
\brainly.com/question/12201392
#LearnWithBrainly
 
        
             
        
        
        
Answer: 25%?
Explanation: theres 4 children and the moms a carrier so 1/4 of 100 is 25%