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Travka [436]
3 years ago
5

How does the number of chromosomes in a sex cell compare with that in the parent cell?

Biology
1 answer:
natita [175]3 years ago
8 0
<span>parent cell is diploid and sex cell is haploid</span>
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In the hypothesis that C. stellatus (a species of barnacle) is competitively excluded from the lower intertidal zone by B. balan
lord [1]
<h2>Competitive exclusion principle.</h2>

Explanation:

The fundamental and realized niches of B. balanoides are identical, but the fundamental and realized niches of C. stellatus are different.

All the possible combination of resources and condition under which a species can grow, survive and reproduce is called its fundamental niche. Whereas, the more limited set of resources and condition under which a species can grow, survive and reproduce in the presence of competitors and predators is termed as its realized niche.

Competitive exclusion principle states that if two competing species coexist in a stable, homogeneous environment, then they do so as a result of differentiation in their realized niche.

<em>B. balanoides</em> can use a wider range of resources than<em> C. stellatus </em>because its fundamental and realized niches are identical . Hence thrives to exclude C.stellatus.

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3 years ago
How might you use an ERD (entity Relationship Diagram) to represent ecosystem services?
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Identify all the entities in the system. An entity should appear only once in a particular diagram. ...

Identify relationships between entities. Connect them using a line and add a diamond in the middle describing the relationship.

Add attributes for entities.

Explanation:

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2 years ago
A factory uses lake water as a system coolant, then returns the water, causing thermal
sladkih [1.3K]

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The water which is released back to the lake contains thermal energy ie heat energy from cooled engines therefore bringing thermal pollution

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Fish spend their entire lives under water. How does the respiratory system of a fish compare with that of a human
qwelly [4]

Answer:

Most fish use gills for gas exchange instead of lungs.

Explanation:

4 0
3 years ago
The bones of the skeleton have five major functions. Some bones protect soft body parts. For example, the sternum, thoracic vert
kirill115 [55]

Answer:

The sternum, thoracic vertebrae, and ribs protect the heart and lungs.

Explanation:

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The function of the <em><u>visceral skeleton</u></em> is to <em>support and protect</em> the first portion of the digestive and cardio-breathing apparatus.

In mammals, the second part of the vertebral column (thoracic vertebrae), the ribs and the sternum delimitate a protective box for lungs and heart.  

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