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Contact [7]
4 years ago
12

3. Why are wells drilled into landfills?

Biology
2 answers:
katen-ka-za [31]4 years ago
8 0
It’s C i just did that
MrRa [10]4 years ago
4 0

Answer:

B is correct

Explanation:

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Which system prepares the body for the situation described in the scenario
hoa [83]

Answer:

It’ll be answer D

Explanation:

Just did it on edg 2020 it’s right

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3 years ago
What is an effector strain of bacteria
wlad13 [49]

the bacteria would colonize on the teeth and help prevent the child from developing cavitie.

7 0
3 years ago
Why are biofuels not necessarily the answer to energy problems?
tiny-mole [99]

1. Vantagens do uso dos biocombustíveis

- Possibilita o fechamento do ciclo do carbono (CO 2 ), contribuindo para uma estabilização da concentração do gás na atmosfera;

- No caso específico do Brasil, há grande área para o cultivo de plantas que podem ser utilizadas para a produção de biocombustíveis ; 

- Geração de emprego e renda no campo (assim evita o inchaço das cidades);

- Menor investimento financeiro em pesquisas (como pesquisas de prospecção de petróleo são muito despendentes);

- O substituto de biodiesel bem o óleo diesel sem necessidade de ajustes sem motor;  

- Redução do lixo no planeta (pode ser usado para produção de biocombustível ); 

- Manuseio e armazenamento de seguros e combustíveis fósseis.

 

2. Desvantagens do uso dos biocombustíveis

- Consome grande quantidade de energia para uma produção;

- Aumento de consumo de água (para irrigação das culturas);

- Redução da biodiversidade;

- Como culturas para produção de biocombustíveis consomem muitos fertilizantes nitrogenados, com liberação de óxidos de nitrogênio, que também são gases estufa;  

- Devastação de áreas florestais (grandes consumidoras de CO 2 ) para plantio das culturas envolvidas na produção dos biocombustíveis ; 

- Possibilidade de redução de produção de alimentos em detrimento do aumento da produção de biocombustíveis , o que pode contribuir para aumentar da fome no mundo eo encarecimento dos alimentos; 

- Contaminação de lençóis freáticos por nitritos e nitratos, participação de fertilizantes. A ingestão dos produtos causadores respiratórios, devido à produção de meta-hemoglobina (hemoglobina oxidada);

- A queima da cana libera grandes quantidades de gases nitrogenados, que retornam ao ambiente na forma de “chuva seca” de fertilizantes, segundo pesquisa do químico ambiental Arnaldo Cardoso e publicada na revista “Unesp Ciência, edição de fevereiro de 2010.  Nos ambientes aquáticos, o efeito é muito rápido: proliferação de algas, com liberação de toxinas e consumo de quase todo oxigênio da água, o que provoca a morte de um grande número de espécies.

5 0
3 years ago
Only a very few flowering plants have been able to invade the oceans. But the few marine ones are very successful. What are some
charle [14.2K]

Answer:

1. High osmotic pressure due to the hypersaline nature of marine habitats

2. The dependence of flowering plants on pollinating insects for fertilization. These insect pollinators are however, absent in the marine environment.

3. Competition from already-established sea weeds and grasses provides another challenge to flowering plants invadingnthe oceans.

4. Constant changes in the environment as well as temperature changes too

Explanation:

The marine environment is a hypersaline environment with a high salt concentration relative to that of the plant cell. Due to high salt concentration of the marine environment, their is high osmotic pressure on living oragnisms found therein. Organisms must have well-adapted osmo-regulatory mechanisms to counteract the high osmotic pressure of their environment. Therefore, flowering plants face the challenge of removing excess salt from their cells or else lose water to their environment, hence resulting in the death of the plant. However, most flowering plants lack this ability and thus, have found it difficult to invade the oceans.

Flowering plants depends on insect-pollinators for fertilization. However, these insect are not found in the oceans, and as such, it is difficult for flowering plants to invade the oceans.

Well-adapted seaweeds and grasses serve as competitors for any invading flowering plant. Since the flowering plants are not yet adapted for life in marine habitats, they lose out in this competition.

The oceans are constantly in a state of frequent turbulence and change due to tides and currents. Also, the temperature of the oceans are very low and fluctuations in the temperatures of the ocean do occur, utimately serving as obstacles to invading flowering plants to adapt to life in the oceans and seas.

4 0
3 years ago
Special senses, such as sight and sound, are detected by:
Leviafan [203]
<span>The special senses of sight and sound are detected by, special cells that transduce stimuli into electrical signals. In the visual system, sensory cells in the retina convert the physical energy of light signals into electrical impulses that travel to the brain.</span>
8 0
3 years ago
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