Answer: they are specific in action 
Explanation: The similarity between cell receptors and antibodies is that both are specific in action. They bind to their specific targets. 
These targets can be determined by the shape of the receptor or the antibody. shape of a protein has a profound effect on its functions 
 
        
             
        
        
        
Answer: 
The outermost shell of a terrestrial planet is referred to as "crust." The Earth's crust is separated into two types: continental crust, which is older and thicker, and oceanic crust, which is younger and denser. Plate tectonics influences the dynamic geology of the Earth's crust. The outermost shell of a terrestrial planet is referred to as "crust."
The mantle is the layer immediately beneath the sima. With a thickness of 1800 miles, it is the Earth's thickest layer. The mantle is made up of extremely hot and thick rock. Under the weight of a huge load, this layer of granite even flows like asphalt. The flow is caused by large temperature differences between the mantle's bottom and top. The movement of the Earth's plates is due to the movement of the mantle! The mantle's temperature ranges from 1600 degrees Fahrenheit near the top to about 4000 degrees Fahrenheit near the bottom!
 
        
             
        
        
        
i am not 100 on this but i thinkk it is B
 
        
             
        
        
        
Answer:
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.
 
        
             
        
        
        
I would say C. 
The numbers on the map range from 48-64, so this shows that the trees need no more than 64 inches (so not answer choice d)
and no less than 48, since 48 is between 30-50, the answer is C.