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yan [13]
2 years ago
8

Why are Earth's materials and energy considered to be in equilibrium? (can be multiple answers)

Biology
2 answers:
vovikov84 [41]2 years ago
8 0
The answers are: Earth's materials are all divided in equal amounts and Energy is balanced and cannot be created or destroyed. 
butalik [34]2 years ago
7 0

The correct answer is option A ,  C and D

The earths material is recycled and this can be visualized from the different chain cycles such as nitrogen cycle, carbon cycle , sulphur cycle, water cycle etc. These basic components which constitute all the matter existing on earth are continuously recycled and reused. Likewise the energy obtained from sun is neither created nor destroyed; it is only converted from one form of energy to the other form. Such as heat energy obtained from sun is converted into kinetic energy when it converts water into water vapor.

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Un jardinero cruzó dos plantas de flores rosadas, con la esperanza de obtener plantas con flores del mismo color. Su sorpresa fu
Temka [501]

Answer:

Este es un ejemplo de dominancia incompleta. Es una ocurrencia genética que ocurre cuando un gen dominante no expresa su manifestación completa en el alelo recesivo en un alelo dominante heterocigoto.

Por lo tanto, ambos rasgos se manifiestan, lo que resulta en la combinación de los dos alelos para los colores (blanco y rojo). Se dice que el alelo rojo dominante exhibe un dominio parcial sobre el alelo blanco recesivo, y esto da como resultado el alelo completamente rosado.

De acuerdo con la ley mendeliana, las dos flores rojas son heterocigóticas. Por lo tanto, las flores rojas heterocigóticas dominantes deben ser R. El alelo blanco es recesivo (rr) enmascarado por el rojo R,

Sin embargo, cuando se cruzan los dos alelos heterocigotos rojos:

Los fenotipos están en forma de

RR, (1) rojo Rr Rr (2) rosa rr (1) Blanco.

Esto ocurre porque el alelo rojo dominante no era total / completamente dominante en el alelo recesivo blanco en cada uno, lo que da como resultado un alelo rosa (el tercer fenotipo)

This is an example of incomplete dominance.It is a genetic occurrence  which occurs when a dominant gene does not express it full manifestation on the recessive allele in an heterozygote dominant allele.

Therefore,both traits are manifested which results in the blend of the two allele for colors(white and red).The dominant red allele is said to exhibit partial dominance over the recessive white allele.And this results in the entirely pink allele.

Based on Mendelian law the  two red flowers are  heterozygotes .Therefore, Red heterozygote dominant flowers should beRr.The white allele is recessive(rr) masked by the R-red,

However,when the two red heterozygote alleles are crossed:

The phenotypes are in the form of  

RR,(1) red  Rr Rr(2) pink  rr(1)White.

This occurs because, the dominant red allele was not fully/completely  dominant on the  white recessive allele in each,which results in pink allele(The third phenotype)

Explanation:

4 0
2 years ago
A test organism develops a genetic mutation that causes neurons to develop without synaptic knobs. How will this impact neuronal
kvv77 [185]

Answer:

The electrical signal will not be converted into chemical signal.

Explanation:

The synaptic knob is the bulbous enlargement also called synaptic terminal preset at the end of the axon.

The synaptic knob is a living cell and thus contains all the living features but they also contain the vesicles which store the neurotransmitters, therefore, synaptic knob acts as a site which converts the electrical signal into a chemical signal. The released neurotransmitter from the synaptic knob interacts with the post neuron or recipient neuron.

If the mutation develops in the neurons which result in the formation of neurons without synaptic knob therefore the electrical signal will not be converted into a chemical signal and thus signal will stop.

8 0
2 years ago
PLEASE PLEASE PLEASE! Katie is researching the evolution of dinosaurs, which thrived during the Triassic, Jurassic, and Cretaceo
tresset_1 [31]

Answer: the graph supports: background extinctions, mass extinctions affected the evolution of mammals and dinosaurs

The graph does not support:both mammas and dinosaur revolved in the pattern of gradualism, dinosaurs evolved by adaptive radiation, and convolution affected the evolution of mammals and dinosaurs

Explanation:The graph only shows mass extinctions and background extinctions

3 0
2 years ago
1. In cell membranes with aquaporins can water move across the membrane?
zhannawk [14.2K]

Answer:

1.B. Yes, water is able to pass across the membrane through the aquaporins

2.A. Neither NaCl nor water can move across the cell membranes.

7 0
2 years ago
Working from deep geologic strata toward shallow geologic strata, what is the sequence in which fossils of these groups should m
pentagon [3]

Answer:

1. charophytes

Explanation:

  • These are macrophytes that grow entire in the freshwater and become fossilized by the calcification oozes,  going back to the Paleozoic era about 250 million years ago.
  • And they are unicellular to multi-cellular organisms also found in moist terrestrial habitats.
4 0
1 year ago
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