Phagocytosis because it’s not a form of transport
        
             
        
        
        
Answer:
C (Photosystems)
Explanation:
Photosynthesis occurs in two distinct stages, the Light-dependent stage and light-independent stage. The light dependent stage generally involves capturing the light energy from sun to produce ATP and NADPH. It occurs in the thylakoid membrane of the CHLOROPLAST.
The light-dependent reaction cannot occur without a large complex of protein and pigment molecules (light-absorbing) called PHOTOSYSTEMS. The photosystems are structured to harvest photons of light, which triggers electron donation by Chlorophyll, photolysis of water and subsequently creation of proton pump to yield ATP and reduction of NADP+ to NADPH. Photosystems consist of Photosystem I (P680) and II (P700). 
 
        
             
        
        
        
Weather is the current state of the atmosphere and is determined by factors like temperature, pressure and humidity wind
In order to study winds you have to study the atmosphere
        
             
        
        
        
The Cambrian Explosion is when diverse animals were first recorded as fossils.