Which kind of diagram compares the number of organisms in the different tropic levels of a food chain or food web

air, water, heat and noise pollution can all be caused by producing and using technology. consuming resources - non-renewable resources, including precious metals like gold, are used to make technology

i'd say that the moon rock is about 2.2 billion years old.

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

satellites are frequently used to make observations of the orbit on earth