The dissolved sugars produced in the leaves of a maple tree move to the roots through the<em><u> phloem</u></em>. It is a tissue that transports nutrients to where it is needed
Hope it helps:)
Its b. Ecosystem
Population is the number of a species in an area, it has nothing to do with physical characteristics.
Abiotic is just an adjective meaning not alive
Competition is just the interactions between organisms in the struggle for food, water, space, mates, and many other things again not physical characteristics
The right answers are B, C and D.
An enzyme is a protein with catalytic properties. Virtually all biomolecules capable of catalyzing chemical reactions in cells are enzymes; some catalytic biomolecules, however, consist of RNA and are therefore distinct enzymes: they are ribozymes.
An enzyme acts by lowering the activation energy of a chemical reaction, which increases the rate of reaction.
The backlit screens of computers emit enough light to suppress the hormone melatonin. This hormone rises in the evening and orchestrates daily rhythms.
<h3>What is melatonin?</h3>
Melatonin is a hormone whose secretion in the brain is connected to sleep (i.e. the time of day or circadian cycle).
Melatonin is produced by the pineal gland as an environmental response to darkness.
This hormone (melatonin) is well known to be involved in different sleep disorders, thereby having therapeutic applications.
Learn more about melatonin here:
brainly.com/question/5557798
