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Eva8 [605]
3 years ago
8

Jerome and his family must evacuate during a hurricane. When his family returns, Jerome

Biology
1 answer:
ivanzaharov [21]3 years ago
4 0

There is a messy and water is everywhere.

Explanation:

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Describe why biologists consider an earthworm to be an organism
azamat

Answer:

Because Lumbricina ( Earthworm ) Is a living, breathing, animal

Explanation:

8 0
3 years ago
Suppose a species of bird called the red-crested warbler has a plumage length that is controlled by a single gene. The Plm allel
AleksAgata [21]

We are going to have different allele frequencies for the two populations

North American:

72 birds total => 144 alleles

72 - 55 birds = 17 short plume birds.

q^2 = (2*17) / 114 = 0.236

Freq(short plume allele) = q = 0.486

Freq(long plume allele) = p = 1 - q = 0.514

From this North American population we get

0.486 * 114 = 55 long plume alleles

0.514 * 114 = 59 short plume alleles

South American:

252 birds total => 504 alleles

252 - 75 birds = 177 short plume birds.

q^2 = (2*177) / 504 = 0.702

Freq(short plume allele) = q = 0.838

Freq(long plume allele) = p = 1 - q = 0.162

From this South American population we get

0.162 * 504 = 82 long plume alleles

0.838 * 504 = 422 short plume alleles

Blended population has

55 + 82 = 137 long plume alleles

59 + 422 = 481 short plume alleles

137 + 481 = 618 total alleles

p = 137/618 = 0.222

q = 481/618 = 0.778

The new population has the p and q from the blended population. The new population has 1000 individuals. The portion of long plumed will be homozygote long plumage + heterozygote, which is p^2 + 2pq, and you multiply that by the population size 1000 to get the final answer.

population size * (p^2 + 2pq) = 1000 * (0.222^2 + 2*0.222*0.778) = 395 birds (answer)

6 0
3 years ago
To be considered living, an organism must______?
NARA [144]
A develops as it grows
5 0
3 years ago
Read 2 more answers
For most terrestrial ecosystems, pyramids composed of species abundances, biomass, and energy are similar in that they have a br
Sveta_85 [38]

Answer:

The correct option is<em> b.  at each step, energy is lost from the system</em>

Explanation:

The amount of energy that travels from one trophic level to another is known to declines at each level. Infact, only 10% of the energy travels from one trophic level to another.

This is because most of the energy is lost by the organisms at each trophic level. It is due to the metabolic processes which occur in the organisms of each trophic level  and most of the energy is lost as heat.

5 0
3 years ago
Evidence has proven that erosion and deposition is caused by groundwater, what process below proves this?
WARRIOR [948]

1. The correct answer is: 3. Formation of stalagmites and stalactites .

Groundwater can be defined as a flow of water under the ground. This water is usually slightly acid, because it is formed when rainwater absorbs CO2 as it falls. That carbonic acid water sinks into the ground and moves through pores.

Groundwater dissolves away solid rock, so it is natural erosion force. As it travels through cracks, it enlarges them and potentially forms cave.

Also, groundwater carries dissolved minerals in solution that might be deposited as stalagmites or stalactites.




2. As the river flows it makes contact with soil, breaks the rocks (weathering) and carries with it sediments: gravel, sand, silt and clay (erosion).

Then, when a river encounters water, it deposits such sediments onto a flat area and forms alluvium (deposition). These sediments form several layers - beds. The delta becomes a main channel that divides land masses into streams – distributaries that look like a maze.


3 0
3 years ago
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