Physical science deals with lens for cameras and binoculars.
Explanation:
Physical science is a branch of science that deals with the study of intimate natural objects such as it includes physics, astronomy and chemistry related subjects.
A lens is a transparent material that refracts light rays so that image can be formed. A lens has two curved surface which are made up of plastic or glasses which are concave and convex in nature.  A converging lens is used to produce images.
Thus Nancy is dealing with physical science as she designs lens for binoculars and cameras.
 
        
             
        
        
        
Answer:
C.
Explanation:
This is because asexual reproduction has no genetic variation.
 
        
             
        
        
        
Solution:
The function and mobility of each joint depends on its anatomical design. Joints that permit no movement or slight movement are common in the axial skeleton where basic structural support and protection  is expected. Joints that are freely moveable are common in the appendicular skeleton where mobility is required. Is known as articulation.
 The tibial collateral ligament reinforces the medial side of the knee joint and the fibular collateral ligament reinforces the lateral side of the knee joint. Two popliteal ligaments reinforce the posterior side of the knee joint.
 
        
             
        
        
        
Skin cells are also called epithelial cells