Rosa drew a flow chart of the carbon cycle. The carbon cycle with 4 boxes connected by arrows. Box 1: carbon dioxide in the atmo
sphere. Box 2: X. Box 3: consumers eat producers. Box 4: Y. The arrow that follows box 4 connects to box 1. Which labels best complete the flow chart? (a) X: Producers undergo photosynthesis. Y: Decomposers return carbon to the soil and release waste.
(b) X: Decomposers return carbon to the soil and release waste. Y: Producers undergo photosynthesis.
(c) X: Decomposers take in carbon dioxide. Y: Producers absorb carbon through their roots.
(d)X: Producers absorb carbon through their roots. Y: Decomposers take in carbon dioxide.
In an experiment, there are usually two groups that are taken and one is compared to another.
One group is the experimental group and the other group is the control group.
An experimental group is the one that receives the test sample or undergoes the experimental procedure and thus, the independent variable that is being tested for is changed for this group.
A control group is the one that does not undergo any experimental testing and hence, the independent variable is kept constant for this group.
Based on the above information it can be concluded that in the given experiment the rats that receiving leptin are the experimental group whereas those that do not receive anything are the control group.
Receptors within the highlighted area provide the sense of HEARING. The highlighted section of the ear is the organ of Corti. The organ of corti is the sensory receptor inside the cochlea, which holds the hair cells, which are the nerve receptors for hearing.
Astrocytes are the most abundant cells in the central nervous system that twine around nerve cells supporting the brain and spinal cord. They perform many functions; such as providing the nuerons with nutrients, control the blood brain barrrier and blood flow. Astrocytes are basically responsible for maintaining the central nervous system homeostasis.