1. Describe three parts of the experimental procedure used to study electromagnets that you think were essential to getting good results. 2. How did building and testing an electromagnet help you better understand electricity and magnetism?

3. How would you know that the magnetism of an electromagnet occurs because of an electric current? How would you know the magnetism was not from another source?

4. Power lines carry electricity constantly. What does this mean about the area around the power lines

PLEASE HELP ANY ANSWER YK HELPS

i believe the correct answer is d

idk why hjggjhjkhj

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.