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11 months ago

Design a controlled experiment to determine whether earthworms change the forest ecosystem.

1 answer:

6 0

"The experimental hypothesis may be that if Asian worms are introduced into a deciduous forest, the soil's nutritional composition will alter. The control group would consist of a region of the forest that has been worm-free in some way. But in order to serve as a control, this forest would experience the same amount of sunshine, heat, and precipitation. In order to determine if Asian worms actually have an impact on the forest ecology, the scientists could then analyze the amounts of nitrogen, phosphorus, and sulfur in the two portions of the forest."

Deciduous forest- A deciduous forest is one that is mostly made up of trees that shed their leaves in the fall.

To know more about the forest ecosystem, click on the below link,

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True or False. The complement system consists of several proteins that circulate in the blood and have the ability to enhance bo

nirvana33 [79]

Answer: False

Explanation: The COMPLEMENT SYSTEM consists of proteins synthesized in the liver. They are activated by inespecific harmful substance (antigen) and begins a cascade of proteins that finally forms an attack complex against bacteria.

The COMPLEMENT is part of the INNATE IMMUNITY, because it is an inherent response, something all humans born with, and it is part of the first defense barrier against any antigen. Part of the innate immunity are too: natural killer cells, neutrophils, monocytes, dendritic cells and macrophages.

On the other hand, the ADAPTATIVE IMMUNITY, is the response that the body develops after being exposed to an antigen before. It is like something that the body recognizes, and then "learns" how to act against it. Part of the adaptative immunity are: lymphocyte T and B, and the antibodies (substances called Immunoglobulins). The immunoglobulins (Ig) are glycoproteins present in the blood.

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3 years ago

One reason why anabolic steroids can imitate the hormone testosterone is because

Serga [27]

Answer:it’s 4 (an increase in testosterone in males unsung anabolic steroids increases male features

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2 years ago

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What is the fitness advantage for the angiosperm approach to the formation of nutritive tissue?

kiruha [24]

An advantage for the angiosperm approach to the formation of nutritive tissue is in energy conservation. The nutritive tissue is formed via double fertilization in Angiosperms. The advantage of double fertilization is that the plant does not invest energy in seed nutritive tissue until after an egg has been fertilized. This means that endosperm (nutritive tissue) starts to develop and store nutrients after it has been fertilized by a sperm cell. Another advantage is that the endosperm nucleus is very active and divides rapidly, so it forms the nutritive tissue very quickly.

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3 years ago

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makvit [3.9K]

Dominant: the more common trait (brown hair)

Recessive: a trait that doesn't show up unless both parents carry it (blue eyes)

Co- dominant: both traits show up and co- exist (AB blood)

Incomplete dominance: when a dominant gene does not completely mask a recessive gene so they blend (pink flower)

Phenotype: physical trait- able to be seen (stripes on a zebra)

Genotype: genetic makeup of an organism - genetic trait

Hetrozygous: different (Bb)

Homzygous dominant: same and dominant (bb) and (BB)

Purebred: same as homzygous- has same alleles (bb) and (BB)

Hybrid: also known as heterozygous traits

75%

25%

orange (AA) blue (aa)

2 orange Aa

100%

Hetrozygous

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3 years ago

Mushroom lies in which phylum?

kirill115 [55]

Answer:

Explanation:

typically of the order Agaricales in the phylum Basidiomycota but also of some other groups.

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2 years ago