I believe the answer is
A
Goblet cells are those secretory cells or unicellular glands, which make and expel mucus can be found in simple columnar and pseudostratified columnar epithelia.
<h3>What are goblet cells? </h3>
They are goblet-shaped cells that have a basal nucleus and a cytoplasm loaded with mucins (the main component of mucus).
<h3>Characteristics of goblet cells</h3>
- It is present in the epithelia of the respiratory and digestive systems.
- Its main function is to secrete mucus, which protects and lubricates the inner surface of simple columnar and pseudostratified columnar epithelia.
Therefore, we can conclude that goblet cells are mucus-secreting cells present in epithelial linings.
Learn more about goblet cells here: brainly.com/question/24688127
B ecosystems because that’s where intraspecific competition occurs
the very basic properties of water
conducts heat
neutral pH
high surface tension
high specific heat
good solvent
how does this help a polar bear, some of it is a stretch but possible benefits
pH - good drinking water, good for marine ecosystem for food
high specific heat - can absorb lots of heat before the temperature rises, polar bears exist naturally in cold environments. (ice) - maybe can tie this in with the natural hibernation cycle
high surface tension - I'm assuming the polar bear walks on the ice at times to get fish
as a good solvent - its probably good that most things dissolve in water, otherwise we would have a lot of floating gunk on top of the water
outside of this, can't give you much more. it has been noted in Shishmaref Village that the ice caps melting is leading to a lack of water in higher mountain areas and polar bears are coming down from the mountain ice cap areas to find food and water
