Some of the features of an animal are scales, teeth, nares, and backbone. The animal is likely to be a?
Choose the sequence which represents the correct order of organisms in a food chain
Flatworms and roundworms are said to be invertebrates because?
When a Spirogyra cell is immersed in a salt solution more concentrated than its cell sap, it?
Which of the following is NOT regarded as a pollutant on land or in the air?
