Approximately what percentage of the energy in one trophic level becomes incorporated into the next level as secondary productivity?

Consider this graph when answering the following question. During which time period was logistical growth observed?

Which of the following elements is not a macronutrient for plants?

an organ that anchors a plant in the soil, absorbs and transports minerals and water, and stores food.

Energy coming into an ecosystem will end up:

A hormone that causes cell division and is found in the apical meristem and in dividing root tissue is

In a grazing food chain,

Which inorganic nutrient do plants get from the air? (Think about the photosynthesis equation.)

Dormancy in seeds and buds can be broken by application of which plant hormone? This hormone is also responsible for growth (girth) in plants.

below ground structures in plants