Answer:
C. Angiosperms and Conifers
<em><u>Angiosperms:</u></em>
<em>A plant that has flowers and produces seeds enclosed within a carpel. The angiosperms are a large group and include herbaceous plants, shrubs, grasses, and most trees.</em>
<u><em>Conifers:</em></u>
<em>A tree that bears cones and needle-like or scale-like leaves that are typically evergreen. Conifers are of major importance as the source of softwood, and also supply resins and turpentine.</em>
Hope this helps you out! Took some time to do this, maybe a brainliest? Sorry for asking! Have a good day!!
 
        
             
        
        
        
Through a sequence of steps called the immune response<span>, the </span>immune system<span>attacks these </span>pathogens<span>. ... This is the </span>immune system<span>. Cells. The cells involved are white blood cells (leukocytes), which seek out and destroy disease-causing organisms or substances</span>
        
             
        
        
        
Answer:
B
Explanation:
Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts, and proteins. In eukaryotic cells, t
 
        
                    
             
        
        
        
It is a lipid. Lipids are some of the most complex basic materials in biology. You can remember them as they have 23 hydrogens, and one H0.
 
        
                    
             
        
        
        
Considering the following; 
I. Heat is not readily available to all living cells.
II. Heat at excessive amounts denatures proteins.
III. Heat does not provide the activation energy for their reactions.
IV. When a critical temperature is reached, proteins no longer function 
Answer; 
I and IV
Explanation; 
Living cells cannot use heat to provide the activation energy for biochemical reactions because heat is not readily available to all living cells and also when a critical temperature is reached, proteins no longer function. 
Too much heat can kill an organism by rendering its organelles, cells, tissues and organs permanently inoperable and un-salvageable. The same process can be observed in tissues at low temperatures, and is the cause of frostbite. This is because enzymes are denatured by high temperature and inactivated by low.