Rappa 1. The test tube means

A test-tube baby means

A test-tube baby means

What are test tube babies?

What are test tube babies.

What is test tube baby?

The diagram below shows two test-tubos A and B. Test-tube A contains a green water plant Test-tube B contains both a groen water plant and a snail. Both test tubes are kept n sunlight Answer the questions that follow Why does test-tube 'B' have more bubbles of oxygen