Answer:
D, none of these.
Explanation:
The control group is going to be the radish seeds, they stay the same. The independent variable is the heating lamps and their temperatures. The dependent variable is the seed's growth rates.
At first glance cycads and palm trees look very similar. How are they distinguished? a. Cycads have cones, and palm trees, a gnetophyte, have single large fruits.
Hope this help
Organic material.................
Answer:During inspiration, the posterior air sacs expand, pulling air into the primary bronchi, which terminate near the far end of the lungs. While some of the air is diverted through secondary bronchi near the back of the lungs and into parabronchi, most of it passes directly into the posterior group of air sacs.
Explanation: brainliest pls