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Jobisdone [24]
3 years ago
5

Within a pyramid of energy:

Biology
1 answer:
Dafna1 [17]3 years ago
6 0

Answer:

more information

Explanation:

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Which organism in this food chain would be considered a tertiary consumer?
dolphi86 [110]

Answer:

Shark

Explanation:

because it is at the top of the food chain and no other animals eat it

8 0
3 years ago
if the average movement of the particles in a sweater increases, what will happen to the sweaters temperature?
ella [17]

Answer:

It will not change

Explanation:

3 0
3 years ago
If you have a pet cockroach with a brown body, how could you find out if it is
aleksklad [387]

Answer:

by testcrossing with a homozygous recessive partner

Explanation:

<u>If a pet cockroach exists whose zygosity is unknown, this can be determined by a test cross. A test cross involves crossing an organisms whose zygosity is unknown with a partner that is homozygous recessive for the same trait.</u>

Let us assume that brown body is represented by the allele B, the dominant allele. The homozygous recessive version would be bb.

The genotype of a brown cockroach whose zygosity is not known can be denoted as B_, where '_' can be a 'B' or a 'b'.

When B_ is crossed with bb:

B_   x   bb

Progeny

2 Bb

2 _b

The phenotype of Bb would be brown (since B is dominant over b) while the phenotype of _b would depend on the zygosity level of the cockroach.

If the unknown genotype is BB, then _b becomes Bb and the phenotype will be a brown body. This means that all the progeny will appear brown. (<em>see the first attached image for the Punnet's square</em>)

In other word, if the unknown genotype is bb, then _b becomes bb and the phenotype will be a alternate color (non-brown) body. This means that 50% of the progeny will appear brown while the remaining 50% will be in the alternate color. (<em>attached</em>

3 0
3 years ago
Which of the following is TRUE? Species on Earth today are just a fraction of all species that ever lived. The number of species
Orlov [11]

Answer:

Until recent history,extinctions have always happened gradually and on a small scale.

Explanation:

Extinction occur when environmental factors like natural disaster,habitat fragmentation,over exploitation,global change don't favor the survival of species thus gradually leads to extinction of species.

Some times human activity becomes the major problem for extinction.More over,poor reproduction,decline in population number and genetic inbreeding also leads to extinction.

99% of all species that exist on earth become disappeared.

Evolution leas to speciation which leas to formation of new species but species become extinct when they are unable to survive against competition.

8 0
3 years ago
How do plants and snails affect the CO2 and O2 gases in an aquatic environment
frez [133]

Answer:

Water plants will absorb carbon dioxide for photosynthesis, and some plants will also absorb ammonia (as a source of nitrogen for growth). Aquatic animals like fish and snails absorb oxygen and release carbon dioxide directly into water through specialized structures like gills.

Explanation:

8 0
2 years ago
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