Answer:
Explanation:
Pumps, also called transporters, are transmembrane proteins that actively move ions and/or solutes against a concentration or electrochemical gradient across biological membranes. Pumps generate a membrane potential by creating an electrochemical gradient across the membrane.
 
        
             
        
        
        
Answer: A) The Sun
Explanation:
The definition that describes Mother Nature seems to be very Geocentric. That tends to exclude the Sun or anything else in the Solar System. This is probably a case of the definition of a planet states that it must be in the solar system so any exoplanets are not by definition planets.
 
        
             
        
        
        
The major products that result from the Krebs cycle are NADH,  FADH and ATP in that order.  
 
        
             
        
        
        
A type I survivorship curve  shows Individuals that survive from childhood to adulthood.
<u>Explanation:</u>
- Type I survivorship curve is also known as Convex survivorship curve.
- A type I survivorship curve confers individuals that possess a high chance of sustaining through early and middle life but have a prompt decline in the number of individuals surviving into late life. 
- This means that most maximum of the individuals will make it to adulthood but the proportion lasting into old age is hugely decreased.
-  A convex survivorship curve is plotted as a convex curve on a graph. 
- These individuals obtain parental care until they reach early adulthood.
-  As a result, they deliver an analogously less number of offspring. 
- This strategy of these individuals is called the K strategy.
 
        
             
        
        
        
D : all of the above that or B but I’m 99% sure it’s D since all of the above can happen