1. What is the difference between ocular and objective lenses?

The ocular lens is positioned at the top of the of the optical tube and the objective lens is positioned at the bottom.

Explanation:

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The occular lense is where you look into the microscopic veiw of the specimen on your microscope by 10x magnification. It is attached to the body tube. Objective lenese further magnify the image. There are often 3 lenses but some have 4. Low- 4x power, Med-10x power and light- 40x power.

Explanation:

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.

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guys i’m confused.

which rock will weather faster?

answer: b rock