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4 years ago

Where can evidence of the struggle to survive be observed today?

1 answer:

3 0

The concept of the struggle for existence concerns the competition or battle for resources needed to live. It can refer to human society, or to organisms in nature. The concept is ancient, and the term struggle for existence was in use by the end of the 18th century. From the 17th century onwards the concept was associated with a population exceeding resources.

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1) Students in a science class created Eco columns to mimic a small ecosystem. Grass seeds were planted in 50 grams of potting s

bazaltina [42]

B) The grass height was the dependent variable.

E) Intermediate numbers of insects had the greatest positive impact on grass growth.

<h3>How insects affect the plant growth?</h3>

The grass height was the dependent variable because it depends on the nitrogenous waste of insects and presence of water. The numbers of insects had the greatest positive impact on grass growth because they provides nutrients to plant in the form of nitrogenous water so we can conclude that option B and E are the correct options.

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2 years ago

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The clear, transparent layer of cells that covers the front part of the eye is called

larisa [96]

Answer:

4 Cornea

Explanation:

The cornea is the white cell covered your eyes

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2 years ago

Anyone Know The Answers For These ?

Natalija [7]

1) plants
2) sugar
3) all
4) sugar and oxygen
5) not putting fertilizer on the soil
6) glucose

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3 years ago

How does phloem differ from xylem?

Pani-rosa [81]

Phloem is the food conducting tissue that has a two-way flow.

Explanation:

Plants prepare food on their own and plants also have conductive cells that carry out transportation process. Plants are divided into two types based on their conductive system i.) vascular plants ii.) non vascular plants.

Vascular plants are those plants which have special conductive cells called phloem and xylem.

Xylem transports water from roots of the plants to other parts of plants and also provides mechanical support to plant. It is uni-directional.

Phloem is the food conducting tissue that transports food to plant and also have bi-directional movement.

7 0

3 years ago

What cell parts are common to all of these cells? Use complete sentences.

Natalka [10]

Answer:

between an animal cell and a plant cell there are some parts that are similar and carry out the same function like:

both have a cell membrane which selects what goes in the cell.

both have cytoplasm which holds the protoplasm(the living part of the cell)

both have a nucleus which carries out all cell activities and holds threads of DNA called chromosomes

both have a mitochondria which is the power house of the cell

both have golgi bodies which modify and carry proteins from sites of synthesis to sites of reaction

I hope this helps

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2 years ago