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fiasKO [112]
4 years ago
9

A reef is made from the hard _________ of marine organisms.

Biology
1 answer:
Alik [6]4 years ago
4 0
Hi , the answer is hermatypic .
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Which of these are the two major sources of nitrate pollution in rivers? the burning of fossil fuels by factories and cars anima
snow_tiger [21]

Answer:

Animal Waste and Fertilizers

Explanation:

Animals, like humans, obtain nitrogen from consuming foods. The foods that the animals consume get digested and with time, the animals release the extra undigested foods and nutrients in forms of urine and feces. Like wise, fertilizers are typically made with animal waste.

6 0
3 years ago
With the proper stimuli, chemoreceptors and mechanoreceptors are depolarized. This is a result of:Sodium channels opening as a r
Alex73 [517]
<h2>Sodium channels </h2>

Explanation:

Depolarization is a result of sodium channels opening as a result of chemical or pressure-based stimuli    

  • Depolarization starts when a threshold stimulus applied on a neuron via Na+ mechanically operated channels that trigger action potential
  • Action potential is an efficient signaling process by which distantly located cells communicate to each other
  • Depolarization of membrane potential is due to influx of Na+ via voltage gated Na+ channels
  • Fast opening of voltage gated Na+ channel shifts membrane potential from -70mV to + 50mV at which voltage gated Na+ channels become inactive thus influx of Na+ abruptly stops        
7 0
3 years ago
Why are ecosystems with grass better for herbivores than ecosystems with trees?
xenn [34]
Herbivores are living creatures that consume plants. They don't eat trees because they don't eat wood. They eat organic plant matter such as grass and leaves. They also eat fruits such as berries.

They need the grass to graze on. They can't eat wood.
7 0
3 years ago
Read 2 more answers
Question in link below. Please help!!
Anna71 [15]

The answer should be A: by consuming plants or other animals. Sorry if I am mistaken though... Please mark me as brainliest if i was helpful!

Good luck and have a great day! :)

8 0
3 years ago
What is a slient mutation
pickupchik [31]

Answer:

Silent mutations is when the change of a single DNA nucleotide within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the gene's protein.

Explanation:

5 0
3 years ago
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