Answer:
Type II cells
Explanation:
Type II alveolar cells are the round-shaped or cuboidal epithelial cells. These cells have a free surface with microvilli. The function of the type II alveolar cells is to secrete the alveolar fluid to keep the surface of the cells moist.
A mixture of phospholipids and lipoproteins is present in the alveolar fluid that serves as surfactant and reduces the surface tension of the alveolar fluid. The overall effect of the presence of surfactant in alveolar fluid is to protect the alveoli against collapsing during exhalation.
Answer:
Among vertebrates, external fertilization is most common in amphibians and fish. Invertebrates utilizing external fertilization are mostly benthic, sessile, or both, including animals such as coral, sea anemones, and tube-dwelling polychaetes. Benthic marine plants also use external fertilization to reproduce.
= Fish
Explanation:
The answer is option B "declining number and variety of the species in an area." Biodiversity is a variety of life for example a ecosystem has many species which makes it a biodiversity. Now a loss of a biodiversity would be loosing a huge amount of species in that area or ecosystem which would mean the answer is option B.
Hope this helps.
Answer:
Explanation: IT should be B
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Answer:</h2>
1- Fire uses the energy, The heat is required, it is the part of the chemical reaction. Heat reacts with the fuel and oxygen to ignite it.
2- Bacteria as the decomposers gets rid of the wastes. It breaks down the organic material such as the remains of dead organisms.
3- Fire grows and develops, The fire has different stages. If its not controlled in its initial stages it could grow and develop into really big destruction.
4- Bacteria can sense and respond to stimuli. There is phototactic and chemotactic movement found in bacteria.
5- Bacteria has ways to protect itself from har.sh environment. They can form colony and work together against the changes, also they can form the hard cyst to protect themselves from the unfavorable conditions.
6- Bacteria reproduces, It has different ways of reproduction i.e. Trans.duction, Transf.ormation, conju.gation.
7- Wrist.watch have a def.ined boun.dary as it is not a living thing it can't gr.ow, it does not have 8 chara.cteristics of li.fe.
8- Wrist.watch has internal organization which help them to carry out basic functions
9- Algae are made of more than one cells
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