Answer AND Explanation:
Darwin describes natural selection as a process whereby nature selects those organisms that have favourable characteristics to be parents of the next generation. The individuals possessing the favourable traits are better suited to the prevailing environmental conditions. This enables them to stand a better chance to survive in the struggle for existence due to limited resources.
 
        
             
        
        
        
Answer:
The protists include plant-like organisms such as algae, animal-like organisms such as amoebas, and fungus-like organisms such as slime molds. They are also very important to us. ... The slime molds are important to ecosystems because they are decomposers, which release vital nutrients back into the environment.
Explanation:
 
        
             
        
        
        
Estos tipos de cáncer se desarrollan en los glóbulos (células sanguíneas) o en otras células del cuerpo.
        
             
        
        
        
Answer: 
 b. "Blast" cells are undifferentiated, actively dividing cells.
Explanation:
Connective tissue cells are dividing cells . These cells are fibroblasts. Mast cells, adipocytes and leukocytes. Blasts are immature dividing cells which are precursor to different connective tissue cells. Connective tissue does contain cells I.e fibroblasts, chondrocytes, osteocytes,etc. Chondroblasts are only found in cartilage not all types of connective tissue.