D because if the species was to be removed from an ecosystem, everything that needed that species as food, or the species ould have to adapt to the foods available in the new ecosystem they live in. Hope I helped, and let me know if you are still not 100% sure about the answer, and I'll try to clarify what I said.
        
             
        
        
        
Heart rate. <span>From this site, the two channels of the autonomic nervous system originate the sympathetic and parasympathetic components. The sympathetic components increase heart rate by releasing the neural hormone catecholamines - epinephrine and norepinephrine. These hormones are cardio accelerators. Acceleration of the heart rate is called tachycardia.</span>
        
             
        
        
        
Answer: For Question 6; False
Explanation: No, the arrow points to what eats that particular animal.
 
        
                    
             
        
        
        
If a fragment of a
chromosome breaks off and then reattaches to the original chromosome at the
same place but in the reverse direction, what happens would result to
inversion.
I hope I was able to answer your question. Have a good day.
 
        
             
        
        
        
Answer:
Information about flowers 
Explanation:
1. A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants. The biological function of a flower is to affect reproduction, usually providing a mechanism for the union of sperm with eggs. 
2. Information about stamen and pollen: The stamen  is a male reproductive organ of a flower. It produces the pollen. The stamen has two parts: anther and stalk. After successful pollination, the pollen grain (immature microgametophyte) completes it's development by growing a pollen tube and the two male gametes move through the pollen tube to the ovule.
sorry if it's too long. hope this helps!!