Biology, 29.07.2019 14:30, jesuslovesusall3
Sponges, members of the porifera, might be the simplest multicellular animals on earth. they do not have any tissues, organs, or organ systems. in order for sponges to have evolved, what must have happened first? a) the organization of cells into groups b) symbiotic relationships among various cells c) the evolution of cells with nuclei and organelles d) the development of the cell wall as a protective mechanism
Answers: 2
Biology, 21.06.2019 13:30, nickydeuce3
Which best explains how this maneuver unblock a person's airway?
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Biology, 22.06.2019 05:30, angelesramos112
One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing
Answers: 3
Sponges, members of the porifera, might be the simplest multicellular animals on earth. they do not...
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