Life is the topic of this course. write an essay about the characteristics of life discussed in section 1 of this unit. your essay should use proper grammar, spelling, and correct sentence structure as you write about each of the characteristics and how they apply or are evident in yourself or some other living thing you will use in your answer (a pet dog, a tree,

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands