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3 years ago

Which of the following are major influences on weather and climate?

Biology

2 answers:

ycow [4]3 years ago

6 0

Answer: B

Explanation:

madreJ [45]3 years ago

4 0

Answer:

B. I, III, and IV only

Explanation:

It is very common to have confusion between what is weather and what is climate. However, these are two different phenomena, even if they are interrelated and are influenced by the same phenomena as:

the cycling of water in and out of the atmosphere
uneven heating of the Earth by the Sun's energy
global patterns of atmospheric movement

On a daily basis, the weather forecast is the estimate of what is expected to occur in terms of temperature and rainfall in a short period. In this sense, the weather is constantly changing: on a certain day it can be sunny in the morning, but it can rain at night, or we can have a rainy week and a sunny week. The succession of the types of weather recorded for a given period is the climate. Thus, to define the climate more accurately, it is necessary to consider the average of the climatic variables over a long period.

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Describe one type of factor that controls cell division.

irina [24]

The cell cycle is controlled by many cell cycle control factors, namely cyclins, cyclin-dependent kinases (Cdks) and cyclin-dependent kinase inhibitors (CKIs). Cyclins and Cdks, which are positive regulators of the cell cycle, activate cell cycle factors that are essential for the start of the next cell cycle phase.

Factors Affecting Cell Division
Nutrients. The nutrients present in the cell affect cell division. ...
Genetics. Genetic code regulates cell division. ...
Chemicals. Exposure to toxic chemicals such as pesticides and some cleaning chemicals can cause cell mutation. ...
Stress. Stress affects cell division.

7 0

3 years ago

A genetically heterogeneous population of rice has a mean in the number of days to maturation of 30. Selection for decreased per

chubhunter [2.5K]

Answer:

h² = 0.6

Explanation:

Before answering the question, we need to know a few concepts.

Artificial selection is the selecting practice of a specific group of organisms in a population -that carry the traits of interest- to be the parents of the following generations.

Parental individuals carrying phenotypic values of interest are selected from the whole population. These parents interbreed, and a new generation is produced.

The selection differential, SD, is the difference between the mean value of the trait in the population (X₀) and the mean value of the parents, (Xs). So,

SD = X₀ - Xs

Heritability in the strict sense, h², is the genetic component measure to which additive genetic variance contributes. The heritability might be used to determine how the population will respond to the selection done, R.

h² = R/SD

The response to selection (R) refers to the metric value gained from the cross between the selected parents. R can be calculated by multiplying the heritability h², with the selection differential, SD.

R = h²SD

R also equals the difference between the new generation phenotypic value (X₁) and the original population phenotypic value (X₀),

R = X₀ - X₁

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Now that we know these concepts and how to calculate them, we can solve the proposed problem.

Available data:

You are selecting rice´s decreased period of maturation.
The population of rice has a mean maturation time of 30 days → X₀
Parental selected average period to maturation is 25 days → Xs
F1 plants mature on average in 27 days → X₁
N arrow sense Heritability → h²

According to what we sow previously, we need to find out the value of h².

We know that h² = R/SD, so we need to get R and SD first.

R = X₁ - X₀

R = 27 - 30

R = -3

SD = Xs - X₀

SD = 25 - 30

SD = -5

Knowing this, we can calculate h²

h² = R/SD

h² = -3/-5

h² = 0.6

7 0

3 years ago

What are earths landmasses

saveliy_v [14]

Answer:

Landmasses include supercontinents, continents, and islands. There are four major continuous landmasses on Earth: Afro-Eurasia, the Americas, Antarctica and Australia.

Explanation:

6 0

3 years ago

Read 2 more answers

Si todas las células del organismo reaccionaran cómo lo hacen las del higado, se esperaría que ?

Marat540 [252]

Answer:

Si todas las células reaccionaran como el hígado, cada una tendría la capacidad de producir proteínas, colesterol, almacenamiento y liberación de glucosa, procesaría la producción de hemoglobina y amoníaco en la urea, purificaría las drogas y los desechos, regularía la coagulación, produciría los factores necesarios en la respuesta inmune e intervendría en la formación de bilirrubina, principalmente, sin embargo, debe tenerse en cuenta que una de las funciones principales es el suministro de energía, si cada célula tuviera reservas de glucosa por momentos de estrés, rápida regeneración celular ante las lesiones, las células no tendrían la capacidad de tener una adaptación específica de sus funciones y los procesos que son básicos para el funcionamiento humano serían destruidos, como un eritrocito cuya función es el transporte de oxígeno, no lo haría ser viable si se dedica a producir glucosa porque su estructura debería adaptarse a otra y sin oxígeno el cuerpo no vive, por lo que sería caótico que los sistemas sí no tienen una adaptación específica y son las mismas, aunque las reacciones hepáticas son vitales, requiere el apoyo de otros órganos con diferentes funciones para que estas tengan lugar, es de resaltar que el hígado tiene una respuesta rápida y efectiva ante el estrés, busca recursos para poder mantener funcionando muchos sistemas, si las células se adaptarán con la misma rapidez, se evitaría la aparición de muchas enfermedades.

3 0

3 years ago

If an organism is homozygous for a particular trait, the organism A. has extra alleles on both chromosomes in a chromosome pair.

inysia [295]

B. Has the same allele on both chromosomes in a chromosome pair.

Here is why:

Homozygous means the same, while heterozygous means different. If both of the same alleles are on both chromosomes, then it will be a homozygous.

There can be two types of homozygous alleles.

Homozygous Dominant: BB

Homozygous Recessive: bb

Notice in both of these they were the same alleles.

Heterozygous: Bb

Notice how both are different alleles.

Below I have attached a diagram of a Punnett square I have made.

On the left is a homozygous recessive allele pair.

On the top is a heterozygous allele pair.

7 0

3 years ago