Alizard lies on a rock to raise it's body temperture. this is called

-hydrothermy
-endothermy
-ectothermy
-geothermy

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The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

20 the compound al(nh3)2 has atoms of nitrogen.

Using meiosis, the sporophyte produces spores that are .