Answer:
Mechanical barriers — which include the skin , mucous membranes , and fluids such as tears and urine — physically block pathogens from entering the body. Chemical barriers — such as enzymes in sweat , saliva , and semen — kill pathogens on body surfaces.
Answer:
The North American and Eurasian Plates are moving away from each other along the line of the Mid Atlantic Ridge. The Ridge extends into the South Atlantic Ocean between the South American and African Plates.
The brain is incorrect. Its the nucleus (the brain is an organ not a organelle)
hope that helps :)
Answer:
plants
Explanation:
because its the only thing that those teeth are used for
Answer:
<em>No, the rock will not move.</em>
Explanation:
As the scenario in the question is depicting, the force applied on the rock by two friends is equal but in the opposite direction. As a result, as the force is equal and working in opposite directions hence, the rock will not tend to move. If the force applied by one of the friends would be greater or lesser than the rock would have moved from its position depending on the force.
