| A | B |
|---|
| Acid-base indicators respond to | a change in the hydrogen ion concentration |
| The most common acid-base indicator | litmus paper |
| Acid rain can be found in the form | of rain, snow, sleet or hail |
| Acid usually have a caustic action | on plant/animal tissue and on metals |
| Adaptation to winter: | hibernate, migrate, adapt |
| Insect adaptation to pesticides | recurrent mutation of existing alleles |
| Primary plant macronutrients | nitrogen, phosphorous, potassium |
| Pesticides may be a | chemical substance, biological agent or a disinfectant |
| The refective quality of a surface | albedo |
| Plants absorb solar energy | through photosynthesis |
| For every 100 metres below ground | the rock temp. increases by about 3 deg. C. |
| Amino acids | the building blocks of proteins |
| Anorexia Nervosa | an eating disorder |
| Antibodies | germ fighters |
| Asteroids can be found between | Mars and Jupiter |
| Atherosclerosis | thickening and hardening of the arteries |
| Matter is composed of | atoms |
