the (drug and control) are the variable that you will change throught the conducted investigation.
Answer:
Trophic level
Consumer
Producer
Explanation:
All living organisms require energy for their life processes, which they obtain by taken in food. In an ecosystem, this food is derived when organisms feed on each other. This process that eventually leads to a flow of energy within organisms is called FOOD CHAIN.
A food chain or food web always begins with a unique set of organisms called PRODUCERS. Producers are autotrophs capable of harvesting light energy from the sun and use it to produce their food (chemical) in a process called PHOTOSYNTHESIS. Other organisms called HETEROTROPHS feed on these producers to derive energy. In ecology, they are called CONSUMERS. Other consumers feed on the previous ones also to get energy.
Hence, each step of the food chain is occupied by organisms that obtain and store energy by feeding on another organism. This step is called TROPHIC LEVEL.
In a nutshell, a PRODUCER (usually plants) starts the food chain/web due to its photosynthetic ability. This producer gets eaten by an organism called CONSUMER and in the process, the energy and nutrient stored in the producers flows to the consumer. Another consumers feeds on the previous one and the energy keeps flowing. Each step of the food chain occupied by an organism that stores and transfers this energy is called TROPHIC LEVEL.
The cells are angular, rigid, and have a cell wall made up of cellulose. This sample most likely came from a plant.
- Chloroplasts, cell walls, and intracellular vacuoles are a few characteristics that set plant cells apart.
- Chloroplasts are responsible for photosynthesis, cell walls provide plants the strength to stand upright, and vacuoles control how cells handle water and store other molecules.
- Plants have a specific cell wall in addition to a cell membrane. Cellulose, a thick material containing several sugar units, makes up this.
- This allows plants to seem rigid and robust because of their thick feature.
- Human cells, in contrast, lack a cell wall and are more flexible and spherical than plant cells.
learn more about plant cell here: brainly.com/question/913732
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