Choose all the answers that apply.

Which of the following statements are true?

The space between neurons is called a synapse.
The nucleus of a neuron is located in the cell body.
Practice can increase the speed of neuron signal transfer.
Axons carry messages toward the cell body.
Electrical impulses in neurons go two ways.

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

Where is having brightly colored feathers that attract mates most clearly an adaptation for a bird? a. a forest with dense vegetation b. a sandy beach beside an ocean c. a snowy tundra with little vegetation d. a swamp with many hawks that eat birds