Malik wants to create an electromagnet and searches through his house for materials. What combination of materials will generate the strongest electromagnetic field?
1. A piece of wire long enough to make 50 coils.
2. A piece of wire long enough to make 20 coils.
3. One 9 volt battery
4. Three AA batteries that equal 4.5 volts
5. An aluminun bolt
6. An iron bolt

When a doggo starts to pace around in the same line for a hand full of days. what would that mean?

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above