Affiliate Marketing Secrets

I NEED YOUR HELP!!!!!!!!!
1.
Which of these factors is biotic?
insects
water
sunlight
soil
2.
Which of these factors is abiotic?
bird
frog
hawk
wind
3.
Floods, droughts, or cold spells affect the _____ of an ecosystem.
abiotic factors
balance
materials
niche
4.
Ecologists count the number of frogs living in a pond community to determine the _____.
balance
limiting factors
organisms
population density
5.
The tree a squirrel lives in is its _____.
community
ecosystem
habitat
niche
6.
A living thing that uses energy, reproduces, and grows is called a(n) _____.
abiotic factor
ecosystem
habitat
organism
7. On the coral reef ecosystem figure shown, which factor is biotic?
rocks
sand
sea horse
water
8.
On the coral reef ecosystem figure shown, which factor is abiotic?
algae
sharks
rock
sponges

Which of these factors is biotic? (1 point) insects water sunlight soil
Which of these factors is abiotic? (1 point)
bird
frog
hawk
wind
3. Floods, droughts, or cold spells affect the _____ of an ecosystem. (1 point)
abiotic factors
balance
materials
niche
4. Ecologists count the number of frogs living in a pond community to determine the _____. (1 point)
balance
limiting factors
organisms
population density
5. The tree a squirrel lives in is its _____. (1 point)
community
ecosystem
habitat
niche
6. A living thing that uses energy, reproduces, and grows is called a(n) _____. (1 point)
abiotic factor
ecosystem
habitat
organism
Coral Reef Ecosystem:
sand,
rocks seawater sharks algae sea horse, use this to answer 7 and 8
7. On the coral reef ecosystem figure shown, which factor is biotic? (1 point)
rocks
sand
sea horse
water
8. On the coral reef ecosystem figure shown, which factor is abiotic? (1 point)
algae
sharks
rock
sponges

I am very interested in creating a coral reef aquarium, but as someone who has not yet really dealt with saltwater aquariums I am curious what the best type of pets to get for it are? I don’t mind fish, but I am more intrigued by arthropods (especially crustaceans) and cephalopods. I am prepared to do adequate research before purchasing the animals for the reef but knowing a good mix is good to start. I don’t mind investing a bit into it but I would like to keep the daily maintenance costs down, specifically in feeding.
I would like to create a fairly self sustaining environment, but want to be careful to avoid predatory animals that will kill off other species housed with them or compete for the same specific niches (algae eaters, etc.)
Any websites or guides that can provide a good reference on creating a nice balance?