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matrenka [14]
3 years ago
9

Please help, I need in-depth details and explanations?

Biology
1 answer:
Alexxandr [17]3 years ago
5 0
1. There are lots of factors that can change the ecosystem and can affect populations. But the most common ones are 1 climate changes, 2 changes in resources of land or food or 3 changes in predation. All these 3 factors can alter the food web thus affecting the population of different species.

For example, if suddenly the number of sharks increases, the whole food web is altered. More sharks consume more fishes, so, the population of fishes are changed.

2. Climate changes are different in different part of the world. But in a whole, the main changes are 1 rising temperature 2 rising in sea level 3 increase in rainfall (or decrease in some places) 4 increase occurance of typhoons and floodings

Some of these changes actually bring benefits to certain people and places, for example, some dry areas can now have a longer crop growing period because they have more rainfall now. Or, less people die from coldness in temperate areas.

However, most of these changes also brings problems and harms to life. For example, tropical diseases like malaria or dengue fever are spreading to temperate areas too, or, animal habitats are destroyed due to flooding.

3. When we say human activities, we mining talk about activities like burning of fossil fuels, or deforestation etc. Many of these activities increases the amount of greenhouse gases like carbon dioxide in the atmosphere thus intensifying the greenhouse effect. Greenhouse effect is necessary for earth and lives, but, the thing is humans are intensifying too much. The whole earth is getting hotter and hotter.

When the earth gets hot, ice sheets in polar regions may melt and thus killing animals there like polar bears. It can also promote the occurrence of acid rain and more lives are killed, especially aquatic animals and plants.
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In a flowering plants species, red flower color is dominant over white flower color. What is the genotype of any white-flowering
katovenus [111]

Explanation:

<u>C. A red allele is present on both homologous chromosomes</u>

<u></u>

Homologous chromosomes are pairs of chromosome of similar lengths, banding patterns, and centromere positions, with genes at the same loci. For dominance, gene copies are present on both of the chromosomes; the dominat variant overrides the effect of the other recessive allele.

Further Explanation:

DNA molecules contain chromosomes that may have different forms called alleles. DNA, which is the genotype, is transcribed into mRNA and later translated into amino acids which are connected together by rRNA to form proteins which constitute the phenotype of an organism. DNA sequence mutations form new alleles, impacting the associated mRNA, and thus the encoded protein.

Homozygous individuals have a chromosome containing two variants of the same allele. Dominant homozygous individuals bear two copies of the dominant allele, whereas recessive homozygous individuals hold two copies of the recessive allele.

 

Learn more about mutations at brainly.com/question/4602376

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly  

6 0
3 years ago
N important organelle found in eukaryotic cells produces ribosomal subunits from proteins and ribosomal rna, also known as rrna.
Fofino [41]
It's the nucleus or the nucleolus to be exact which produces rRNA which as a structural component of ribosomes.

Hope i helped!
5 0
3 years ago
Read 2 more answers
The largest vein in animal's body is the A. femoral vein. B. aorta. C. vena cava. D. coronary vein.
Gennadij [26K]
The largest vein in an animal's body is in fact the Vena Cava.  
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1. Water has many unique properties that contribute to making Earth habitable. Describe all four of these unique properties of w
marysya [2.9K]

The properties are:-

1. Water is polar. Water molecules are polar, with partial positive charges on the hydrogens, a partial negative charge on the oxygen, and a bent overall structure. This is because oxygen is more electronegative, meaning that it is better than hydrogen at attracting electrons.

2. Water is an excellent solvent. Water has the unique ability to dissolve many polar and ionic substances. This is important to all living things because, as water travels through the water cycle, it takes many valuable nutrients along with it!

3. Water has high heat capacity. It takes a lot of energy to raise the temperature of a certain amount of water by a degree, so water helps with regulating temperature in the environment. For example, this property allows the temperature of water in a pond to stay relatively constant from day to night, regardless of the changing atmospheric temperature.

4. Water has high heat of vaporization. Humans (and other animals that sweat) use water’s high heat of vaporization to cool off. Water is converted from its liquid form to steam when the heat of vaporization is reached. Since sweat is made mostly of water, the evaporating water absorbs excess body heat, which is released into the atmosphere. This is known as evaporative cooling.

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hram777 [196]
The amoeba is a eukaryote whose bodies most often consist of a single cell.
The cells of amoebae, like those of other eukaryotes, possess certain characteristic features. For example:-
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3. They contain specialized structures called organelles, which execute a range of cellular functions including energy production and protein transport.

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