Answer: I think it might be D.
Explanation:
 
        
             
        
        
        
Let's call your number n. Twice your number is 2n. The product of your number and twice your number (so n multiplied by 2n) is 128.
Set up an equation:
n × 2n = 128
2n² = 128
Divide both sides by 2:
n² = 64
Square root both sides to isolate n:
n = 8
The question asks for half your number, so just half 8:
8 ÷ 2 = 4.
Half your number is 4.
 
        
             
        
        
        
Answer: a. True 
Explanation:
In the pursuit of acquiring more fresh water, fog harvesting was introduced. It is a way to capture fog which is water vapor that is condensed but close to the surface. Fog has the tendency of reverting to water's liquid form when it comes into contact with objects. 
Collecting water from fog involves using a net where the water will collect and fall due to gravity into a conduit such as a trough or gutter that will then take it to a storage tank. 
 
        
             
        
        
        
Answer:
The first trilobite species went extinct and its ecological niche was occupied by another species, which may have evolved from the first cap
Explanation:
Considering the knowledge of geography and the situation you described in the text, the correct answer is that ", the Trilobite species went extinct and its ecological niche was occupied by another species, which may have evolved from the first cap.
 
        
             
        
        
        
Answer:
<u>Mould board plough, disc plough, soil stirring plough, ridger plough,</u> tool frames/carriers with mouldboard plough or tillage sweeps, etc. are improved implements designed for breaking soil. Ploughs are used to break soil and invert furrow slice to control weeds, etc.