1. they dont have to spend energy looking for someone.
2 when an organism population is low it makes it easie to create more of them
Yes that is true. The gray matter of the cerebrum is the area of the brain where nerve cell bodies make connections, called synapses, that control brain activity.
White matter, on the other hand, is mostly the axons of neurons. The pale fatty insulator of axons, myelin, is mainly responsible for their whitish appearance on gross examination.
C) According to Lamarck, long necked giraffes evolved because they spent the majority of their time stretching their necks and this trait was passed down to offspring; according to Darwin, Giraffes with long necks had the advantage in the environment and survived, reproduced, and passed this trait on to offspring.
The testes lie between the thighs, in a pair of pouch-like sacs called scrotums or scrotal sacs. The scrotums are outside the main body cavity and thus are at a slightly lower temperature than body temperature.The lower temperature is essential for the sperms to develop properly.
