Crossword Puzzle ConceptsOnline version En este crucigrama vamos a repasar los conceptos básicos del tema by Marco Artime 1 Vital function related to create new species 2 Animals that eat other animals 3 Those animals that lay eggs 4 Vital function related to create anergy by feeding to stay alive 5 The only class of mammals which are warm blooded 6 Limbs that can be only find in birds 7 You can find this only in mammals mouth to suck milk. 3 6 2 4 7 1 5