This information can be useful to agriculture because bees are major pollinators of crops, so it is important to know which pesticides to manage in order to avoid risk to bee survival. That is option B.
Bees are one of the social insects that lives in societies that are based on a caste system.
Each caste performs a special task or series of tasks that serves as an economic importance to the agricultural system.
Pests such as parasitic mites cause poor agricultural yield. By using pesticides, which are protective chemicals, farmers have greatly improved crop yield.
The bee workers while in search of pollen from crops can be harmed from the pesticides that is being used to control parasitic mites. This can lead to Colony collapse disorder of the caste system of bees.
Therefore, it is important to know which pesticides to manage in order to avoid risk to bee survival.
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D; collecting data, because the student is collecting information on the topic
<span>very acidic ph - stomach
mucociliary escalator - intestines
cerumen and sebum - ear
lysozyme - tears and saliva
keratin and tightly packed cells - skin
</span>
The correct answer is "mucociliary escalator intestines".
The mucociliary escalator is a mechanism that belongs to the bronchi, not the intestines. The mucociliary escalator is a mechanism of self-clearing where cilium, cilia and mucus work together to expel any material that's solid, or not too fluid or gaseous, including pathogens. From the main bronchi to the alveoli there is a moist lining produced by the specific present epithelium. This epithelium presents cilia. The cilia are embedded in mucus. The mucus is what helps in trapping any material that's solid, or not too fluid or gaseous, including pathogens. After these are trapped so that they don't progress to the alveoli, the cilia move in such a way that push the particles again to the exterior of the bronchi, like an escalator.
Answer:
Development of the fetus to grow
oxygen for respiration. nutrients (food and water)
The developing fetus also needs its waste substances removing. The fetus is protected by the uterus and the amniotic fluid , a liquid contained in a bag called the amnion.
<u><em>Hope this helps!</em></u>
Answer:
Explanation:
Staining is done for onion cells to visualize the cytoplasm of yellow and white onions because they are not pigmented. The staining of human cheek cells with methylene blue is necessary to stain the nucleus to get clear image of it under microscope because methylene blue binds to negative charge nucleic acids
While for leaf epidermal cells smears, staining is not necessary as they are visible under light microscope without staining and they also have pigmented materials inside them such as chlorophyll chloroplast. The cork cell is a non-living and have a cell wall whose structure is visible under light microscope.
