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3 years ago

Due to a recent drought, a farmer has lost quite a bit of soil on his fields because

Biology

2 answers:

Morgarella [4.7K]3 years ago

7 0

Evaporation i believe has a big role...

Andrej [43]3 years ago

6 0

Answer:

Rapid evaporation and absence of precipitation

Explanation:

Drought is considered to be one of the natural disaster as every year farmers had to face this problem. It occurs in a particular area due to the lack of precipitation and rapidly increasing temperature condition. It is characterized by a very dry type of climate where the moisture content is very low or absent. Due to drought, the soil becomes dry and there is an absence of organic materials and water content if present gets evaporated. Subsequently, the soil loses its fertility and is rapidly eroded away losing the essential materials by the action of wind.

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What marks the boundary between the mesozoic and the cenozoic (called the k-p boundary)? g?

olga55 [171]

The extermination of the dinosaurs, the start of a rise to dominance of mammals and a meteorite effect in mexico marks the boundary among the mesozoic and the cenozoic or as named as the k-p boundary. In addition, the cretaceous paleogene (K–Pg) boundary which is previously recognized as the cretaceous tertiary (K–T) boundary is a geological signature typically a thin band of rock.

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3 years ago

Damian grew a plant from a leaf cutting. How did the plant reproduce?

ycow [4]

A plant grew from a leaf cutting will reproduce asexually.A plant cutting refers to a piece of plant that is used to vegetatively propagate a plant. A plant cutting can be a piece of stem, root or leave. The plant cutting is usually placed inside a suitable medium, where the cutting will grow to produce a new plant under suitable conditions. Plants that are grown from plant cutting are considered to be reproduce asexually, because vegetative propagation is a form of asexual reproduction.

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3 years ago

Read 2 more answers

Do you think that having chloroplasts gives plant cells an advantage over animal cells? give support for your opinion.

mote1985 [20]

Animals have many advantages. But plants can make food anywhere there is sunlight/ultraviolet rays. So no need to hunt unless you're a Venus Flytrap. So plant cells can sustain themselves easier to a degree. As with many things in biology, it all comes down the the circumstances.

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3 years ago

Choose all the answers that apply.

arlik [135]

Answer:

Option A, B, and C are correct

Explanation:

Incomplete dominance means that the trait represented by two alleles expresses themselves equally thereby hindering dominance of any of the allele completely.

Now,

Let us assume the allele of red petals be represented by "R" and the allele of white petals be represented by "r"

The pink flowers will have genotype "Rr"

Now if two pink flowers are crossed, the following offsprings are produced

Rr X Rr

RR, Rr, Rr, rr

Let us evaluate all the options one by one

a) Ration of pink flower to red flower ( Rr:RR)

There are 2 pink (Rr) flower and 1 Red (RR) , thus the ration of pink flower to red flower is 2:1. Option A is correct

b) one out of four offspring is white in color, therefore the % of white flower is

$\frac{1}{4} * 100\\= 25\\$ %. Option B is correct

c) Two pairs RR and rr are homozygous, thus out of four offsprings two are homozygous. Therefore %of homozygous flowers will be

$\frac{2}{4} * 100\\= 50\\$ %. Option C is correct

d) There are two heterozygous offsprings i.e Rr, therefore the % of heterozygous is $\frac{2}{4} * 100\\= 50\\$ %. Option D is incorrect

e) half of the flowers are hybrid. Therefore option e is incorrect

Therefore, Option A, B, and C are correct

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3 years ago

What are the limitations of the dissecting microscope?

Gennadij [26K]

Stereomicroscopes is that they have a much lower magnification limit than other microscopes, such as the compound microscope, for instance. The stereomicroscope can magnify an image 100-150 times, while normal compound microscopes can magnify an image 1000-1500 times. This can be a disadvantage of stereomicroscopes, because not as much detail of the image is seen.

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3 years ago