Answer:
Hormones are able to travel the body but only affect certain cells because only those target cells have receptors for that particular hormone. Some hormones bind to receptors on the surface of target cells. Others enter the cells and bind to receptors in the cytoplasm or nucleus.
b. The cuticle provides protection against predators.
c. The cuticle prevents water loss in a terrestrial environment.
d. The cuticle allows for improved gas exchange.
Answer: c. The cuticle prevents water loss in a terrestrial environment.
Explanation:
The earthworms have a thin cuticle outside their epidermis. The cuticle performs different functions in the worm body. The cuticle protects the worm from predators. The thin cuticle remains moist with the slimy mucus. The cuticle helps in the exchange of gases from the external environment. The cuticle helps in absorbing the oxygen from the external environment whereas it expels the carbon dioxide to the external environment. The cuticle prevents the loss of moisture and allows the gaseous exchange which facilitates the survival of the worm in a harsh terrestrial environment.
b. contraction of the internal intercostals muscles.
c. contraction of the diaphragm.
d. increase in atmospheric pressure.
e. increase in CO2 in the blood
Answer:
The correct answer is option a. "recoil of the lungs".
Explanation:
Normal respiration is passive, which means that no energy is needed to release the air from the lungs. Passive respiration is preceded by the recoil of the lungs that happens without any effort because of the elasticity of the lungs tissue. After inspiration, the diaphragm and intercostal muscles relax and the thoracic cavity and lungs decrease in volume. This causes that the interpulmonary pressure rises above atmospheric pressure, creating an air pressure gradient that put the air out of the lungs without the need of energy.
Answer:
Explanation:
Disconformities and nonconformities are both types of unconformities. Nonconformities occur where layers of sedimentary rock are deposited over eroded igneous or metamorphic rock. Disconformities occur when there is a gap due to erosion or non-deposition between layers of sedimentary rock.
Answer:
A
Explanation:
Answer:
B.
Explanation:
I am pretty sure that is the answer
Answer:
More and more of the medium ground finch population would develop the characteristic of having a thick beak for breaking larger seeds. It would be a small amount of them having the characteristic at first, but then gradually the amount would increase until all of them keep this characteristic.
This is an example of natural selection and adaptation. The two words are related, in a way. Natural selection is when a species change over time with a characteristic that helps them adapt better to their environment. The medium ground finch population has to adapt in the change of environment through natural selection of getting the characteristic of thicker beaks for bigger seeds. Developing this characteristic will help more survive and reproduce, allowing the natural selection process to take place easier and quicker.
Explanation:
Please help me with this assignment
Answer:
A = parietal labe | B = gyrus of the cerebrum | C = corpus callosum | D = frontal lobe
E = thalamus | F = hypothalamus | G = pituitary gland | H = midbrain
J = pons | K = medulla oblongata | L = cerebellum | M = transverse fissure | N = occipital lobe
Explanation:
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