Directions: There are four words in a group. Choose and underline the word that DOES NOT belong to the group then classify the remaining terms EXAMPLE VARIABLES OBSERVE TEST RESEARCH The rest are STEPS OF SCIENTIFIC METHOD. 1. Proton Electron Neutron Neurons 6. Nervous tissues Epithelial tissues The rest are Vascular tissues Circulatory system 2 Mitochondria Cell wall Plasma membrane Heart 7. The rest are 8. The rest are Dog Human Cat Pancreas 3. Blood cells Adipose cells Nerve cells Kidney The rest are The rest are 9. Flock of birds Colonies of ants Heart Human being Kidney Liver Lysosome Herd of cow The rest are The rest are 5 Circulatory system Digestive system 10. Ponds Biotic Abiotic Outerspace Excretory system Solar system The rest are The rest are 5.​