The hormone testosterone promotes sexual desires in both males and females
Answer: Bacteria likely cause less disruption to the natural environment.
Explanation:
The digestive tract of the frog is well vascularized because it aids in the absorption of nutrients.
The digestive tract of a frog is a hollow long tube that extends from the mouth to the anus which helps in the ingestion and digestion of food.
The digestive tract of frog has the following characteristics:
- alimentary canal of the frog is not long, that is, it is short.
- It has accessory organs of digestion such as liver, gall bladder and pancreas.
All the digested food substances are absorbed at the small intestine due to the presence of microvilli.
This microvilli is made up of a central core that is vascularized, that is, it contains artery, vein and lymphatic capillary.
Therefore, the vascularized microvilli of the small intestine of frog help in the absorption of nutrients.
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Answer:
The correct answer is desert.
Explanation:
If an entomologist wants to look for a good example of an organism that prevents water loss, he must look for organisms in the desert.
A desert is one of the ecosystems that <u>receives less water</u>, the rainwater that falls is<u> less than 150 mm per year.
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Despite the heat and lack of water, there is a wide variety of living beings that inhabit this type of ecosystem. But for that <u>they must save water</u>, and they do this through adaptations that they developed when they were living in this place.
They can have two types of adaptations: physical or behavioral adaptations.
In behavioral adaptations, desert animals simply avoid the sun to generate greater water retention. Depending on the species, <u>some choose to go out only during the night</u>, and others <u>prefer to be under the shadow of a cactus.
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Some species also get the water they need through the food they eat, which prevents them from having to go in search of water.
One type of physical adaptation is the one that occurs in those animals who accumulate fatty tissue in their body which allows them to <u>stay fresh and thus prevent water from evaporating.</u>