Answer:
For most crops the saturation point will be reached at about 1,000–1,300 ppm under ideal circumstances. A lower level (800–1,000 ppm) is recommended for raising seedlings (tomatoes, cucumbers and peppers) as well as for lettuce production
Explanation:
(I do not take credit for the answer)
Answer:False
Explanation:Fossil fuels are the energy-rich substances
Answer: Unlike the one way flow of energy, matter is recycled within and between ecosystems.
B
A child needs a beating heart to live, if not they cam't develop.
There are more potassium ions inside the neuron than outside.
Answer: The second one so uea
