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elena-s [515]
3 years ago
13

Why are human alterations to the carbon cycle a problem?

Biology
1 answer:
nasty-shy [4]3 years ago
5 0

Answer:

Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere.

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NEED HELP ASAP
ASHA 777 [7]

Answer:

the answer is option c cellulose..

Explanation:

Cellulose is a molecule, consisting of hundreds – and sometimes even thousands – of carbon, hydrogen and oxygen atoms. Cellulose is the main substance in the walls of plant cells, helping plants to remain stiff and upright. Humans cannot digest cellulose, but it is important in the diet as fibre.

Starch or amylum is a polymeric carbohydrate consisting of numerous glucose units joined by glycosidic bonds. This polysaccharide is produced by most green plants as energy storage

Glycogen is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals, fungi, and bacteria. The polysaccharide structure represents the main storage form of glucose in the body.

hope it helped you and the answer is correct

4 0
4 years ago
How many trophic levels are there in the following food chain?
Dmitry_Shevchenko [17]

Answer:

4

Explanation:

In the food chain that is presented there are four trophic levels. The first level is occupied by the phytoplankton, which is the producer, thus it is at level one on the energy pyramid. Second comes the shrimp, which is feeding on phytoplankton, but is prey upon by numerous other species, thus it is on the second level in the energy pyramid. In the third level of the energy pyramid we have the perch. It is a small carnivore, and it feeds upon the shrimp and many other small prey animals, but it is also preyed upon by many larger species. The pike and the osprey are occupying the fourth level in the energy pyramid. They are both predators, and they prey on on the likes of the perch and many other small fish and animals, but they are not at the top of the food chain, as they also have predators above them and prey on them.

7 0
3 years ago
Read 2 more answers
Which of these groups of fruits are drupes? Pineapples, mulberries, and figs Oranges, lemons, and limes Plums, apricots, and coc
tresset_1 [31]

Answer:

plums apricots and coconut

Explanation:

a drupe is a fleshy fruit with thin skin and a central stone containing the seed, e.g., a plum, cherry, almond, or 

3 0
3 years ago
Which substance is an energy source but is not regarded as a nutrient?
fiasKO [112]
Mark is a muscular football player while his friend, Bryan, appears to be overweight. They are both of the same height and weight. Can they have the same BMI?

A. No, since one is overweight and the other is muscular.
B. Yes, because BMI measures weight-for-height and not body fat composition. C. Yes, only because they are the same weight.
<span>D. Yes, only because they are the same height. hope this </span>helped 
4 0
4 years ago
What species do we consider good and which ones are bad
VikaD [51]

Answer:

We may consider bees good because they pollinate the plants that give us food crops. We may consider mosquitos bad because they can transmit malaria.

6 0
3 years ago
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