B. this shows the cross pollination needed for these flowers to reproduce
Answer: c. Chewing surface of all Posterior teeth.
Explanation:
Teeth in animal and human body plays important role in beginning the simplification of complex food entity inside the mouth. It exhibit various surfaces for various purposes like cutting, chewing, and grinding.
Occlusal surface refers to the surface of the posterior tooth which performs the function of chewing and grinding.
C
The hygroscopic nature of lichen also does not allow them to survive highly polluted environments. This is because they will also absorb the toxins from the atmosphere into their systems. The toxins will then affect their growth, negatively.
Explanation:
Lichen is one pioneer species in primary succession. They have undefined roots hence do not require soil and can grow on rocks and break them down slowly by chemical weathering (using excreted organic acids). More so lichen does not need to absorb nutrient via roots because the organism is a symbiotic relationship between fungi and algae. The algae can use photosynthesis to manufacture food while the fungi complex hyphae that surround the algae can absorb water & nutrients from the air due to their high hygroscopic nature.
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For more on lichen check out;
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In case of severe burn injuries, a person experiences a sudden increase in the number of dangerous bacteria in the gastrointestinal tract approximately 32%. The increase in the dangerous bacteria increase the chance of developing gastrointestinal conditions like irritable bowel disease, and other non-related conditions like rheumatoid arthritis and diabetes.
But in case of less severe burn injuries, the dangerous bacteria accounted for just 0.5% of the bacteria. An imbalance in the bacteria cause long term health consequences, in fact some of the complications could possibly even result in death of a person with severe burn injuries.
Invertebrate doesn't posses "Backbone" whereas Vertebrate chordate have that. That's the only & most important difference between them.
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