the death of cells which occurs as a normal and controlled part of an organism's growth or development.
Answer:
The arrow should be pointing from the producer towards the consumer.
Producer --> Consumer
Explanation:
The arrow represents the flow of energy in a food web. Producers are the first source of energy, as they make their own food. The energy is then transferred to the consumer when they eat the producer. For example, if a cow were to eat grass, the energy would flow from the grass to the cow. The arrow shows how this energy is flowing from the first source to the second.
"Estrogen is involved in a feedback mechanism associated with the follicular phase of menstruation.<span> In a negative feedback mechanism, estrogen released from follicles influences the pituitary gland to decrease the production of follicle stimulating hormone, also known as FSH. In a positive feedback mechanism, rising estrogen causes FSH to increase"
Find out the full answer here~
http://www.ask.com/science/estrogen-play-role-feedback-mechanism-9cc4f9c5050fed0a
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Cellular respiration takes place in the mitochondria. Following this logic: if plant cells use ATP, and ATP is made in the mitochondria, then plant cells must have mitochondria. Plants need to do something with all that glucose they make!
