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kupik [55]
3 years ago
9

Molly is looking for a sustainable fuel source that doesn’t require technical equipment to harness. She is concerned that trees

take too long to replace through reforestation. What alternative should she consider?
A. fossil fuels
B. geothermal
C. hydroelectric
D. biomass
E. tidal
Biology
2 answers:
Lesechka [4]3 years ago
8 0

I'm pretty sure it's biomass, not 100% sure though

Shkiper50 [21]3 years ago
3 0

Answer: B. geothermal

Explanation:

Geothermal energy is produced when the groundwater is heated by the hot mantle. This results in the production of hot water. The hot springs are located to obtain the hot water energy. The energy harnessed by this geothermal hot water springs does not require any technology and equipment.

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3 years ago
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Nuthatches and brown creepers are birds which eat insects that hide in the furrows of bark in hardwood trees. The creeper search
jeka94

Answer:

This are our options to complete the question

-bottom-up and top-down hypotheses

-competitive exclusion

-keystone species

-resource partitioning

-character displacement

The CORRECT ANSWER IS resource partitioning.

Explanation:

Resource partitioning is the division of certain limited resources by species to eliminate competition in an ecological niche in order to allow easy coexisting with one another

The creeper searches for insects by hunting from the bottom of the tree trunk to the top, whereas the nuthatch searches from the top of the trunk down to eliminate competition and allow for peaceful coexisting between them

5 0
3 years ago
In plants, chloroplasts are necessary for A. respiration. B. photosynthesis. C. secretion. D. both respiration AND secretion. E.
Ksivusya [100]

Answer:

B- Photosynthesis

Explanation:

Chloroplasts are <em>chlorophyll-containing, eukaryotic cell structures</em> that function in photosynthesis by absorbing energy from sunlight, combining this energy with water and CO2 to convert them to sugars . This cell structure is known as a plastid. The sugars produced, are important for the survival of the plant.

Chloroplasts reproduce on their own, independent of the whole cell because they contain their own DNA. Plant chloroplasts are located  in guard cells in plant leaves. Closely linked to these guard cells are tiny pores called stomata, which allow gas exchange required for photosynthesis.

Photosynthesis occurs in two stages:

  1. The light reaction stage
  2. The dark reaction stage

The Light reaction stage takes place in the presence of light. Clorophyll converts light into chemical energy in the form of ATP and NADPH. Both molecules produced, are used in the dark stage to produce sugar.

In the dark reaction stage, the stroma, containing enzymes, facilitates reactions leading to the production of sugars from ATP and NADPH. This process is also called the carbon fixation stage. The sugar produced can be stored in the form of starch for other processes such as respiration.

8 0
3 years ago
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What process must metamorphic rocks undergo to become igneous rocks? (metamorphic rocks + ? = igneous rocks)
eduard

Answer:

Metamorphic rocks underground melt to become magma. When a volcano erupts, magma flows out of it. As the magma/lava cools it hardens and becomes igneous rock.

Explanation:

So alot of HEAT

7 0
3 years ago
Explain how two cell structures give plants their shape at a macro level
VARVARA [1.3K]

The Structural Organization of Cells. The cell is the smallest matter that still absorbs the characteristics of life. All cells have three basic parts, a plasma membrane splits each cell from the environment, permits the flow of molecules across the membrane, and consist receptors that can affect the cell’s activities. A DNA-containing region occupies a portion of the interior. The cytoplasm contains membrane-bound compartments (except bacteria), particles, and filaments & end ash; all bathed in a semifluid substance. Eukaryotic cells are defined by their possession of a membrane-bound nucleus. Prokaryotic cells have no defined nucleus; the only representatives are bacteria.

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