Answer:
I thing the first one osmosis
I thinks its a layer of soil with characteristic properties, sorry if its wrong I'm a beginner
Precipitation, soil, temperature, humidity, and altitude
Measuring photosynthesis via the production of oxygen. Oxygen can be measured by counting bubbles evolved from pondweed, or by using the Audus apparatus to measure the amount of gas evolved over a period of time.
<span>Yes, if the photo receptor cells and simple eyes that preceded it were useful to the animals in which they arose.</span>