By the availability of food in plain open. If the main source of food for a certain bird species would be hidden safely in small and hard-to-reach places, then the bird beak would look differently over successive generations, compared to those where food would be easily found on the open.
There are many conditions that makes someone's heart rate change. Below are a few.
1. The person does some physical activities
2. Someone stops doing physical activities
3. Someone is nervous can cause it to change.
I hope these help. Sorry if I misunderstood the question
Answer:
Iv and
Ii
Explanation:
I think they are the main function of human skeleton system.
H20+Sunlight+CO2=C6H12O6
^ ^ ^
Water Carbon Dioxide Glucose
The answer would be C because people destroying rain forests for homes and resources are diminishing animal homes and animal population <span />