vroakiled
contestada

In which situation has the independent variable for the experiment been changed?
Check all that apply.

changed from counting the number of duckweed at day 0 and day 14 to counting them every day

changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks

changed from testing the effect of pH on duckweed growth to testing the effect of light levels on duckweed growth

changed from testing the effect of acid pH on duckweed growth to testing the effect of basic pH on duckweed growth

Respuesta :

All but the first one
jennalaree77

Answer:

3. changed from testing the effect of pH on duckweed growth to testing the effect of light levels on duckweed growth

4. changed from testing the effect of acid pH on duckweed growth to testing the effect of basic pH on duckweed growth

Explanation:

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