Which of the following is NOT a qualitative observation? Question 6 options:

Breed of a dog

Exact number of students in a classroom

Taste of a sour apple

Texture of a coat

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?