Answer: a. Seasonal pattern
Explanation:
Seasonal pattern or seasonal affective disorder is a kind of depression which affects the patient at a particular season and goes when the season ends. It typically starts from late fall and months of early winter. It goes away in springs and summer.
Hence, Petyr experiences symptoms of seasonal pattern depression.
Answer:
dehydration
Explanation:
this is the condition in which water in the body drop below normal levels as a result of illness excessive sweating or not drinking enough water
Answer:
Okay
Nutrition is the process of providing or obtaining the food necessary for health and growth.
Nutritional disease, any of the nutrient-related diseases and conditions that cause illness in humans. They may include deficiencies or excesses in the diet, obesity and eating disorders, and chronic diseases such as cardiovascular disease, hypertension, cancer, and diabetes mellitus.
Explanation:
Specific excretory organs are absent in unicellular organisms belonging to the<u> phylum Porifera.</u>
The organisms of the phylum Porifera are classified under the kingdom Animalia and they lack specific organs in their bodies.
The word "Porifera" refers to pore-bearing organisms.
These animals have loosely organized cells and are found in freshwater marine ecosystems.
On their body, a large number of pores - Ostia - are present which perform various functions such as excretion.
However, respiratory gases and waste materials are exchanged through a diffusion process.
Moreover, in them, reproduction takes place through fragmentation and budding.
If you need to learn more about excretory organs click here:
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