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Y_Kistochka [10]
3 years ago
9

How many factors does a scientist want to differ between the experimental and control groups?

Biology
1 answer:
EastWind [94]3 years ago
6 0

Answer:

1 factor deffer which is independent variable which is controled in control groups

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Hepaticophytes lack stomata and tracheids. What would provide evidence to justify their inclusion in the Bryophytes and not the
tatyana61 [14]

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The characteristics that define liver diseases within bryophytes are:

They are terrestrial plants unlike Charophytes that are aquatic.

There is development of an embryo that gives rise to a diploid multicellular sporophyte.

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3 years ago
Human proteins can be produced by cells in the milk-producing mammary glands of transgenic mammals if the regulatory sequence of
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Answer:

The given blank can be filled with location of gene expression.

Explanation:

A regulatory sequence refers to a section of a molecule of nucleic acid that possesses the tendency of declining or upsurging the expression of particular genes within an organism. The regulation of gene expression is an important characteristic of all living species and viruses.  

In the given case, it is essential to use the regulatory sequence of a milk gene when developing a recombinant gene as a regulatory sequence monitors the location of gene expression.  

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3 years ago
What must be true for natural selection to happen?
Juliette [100K]

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pretty sure it’s B

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Entrepreneurs attempted, but failed, to harvest nuts from plantations grown in Southeast Asia. Attempts to grow Brazil nut trees
Anuta_ua [19.1K]

Answer:

The reason that there is no fruit even the plant produced healthy flowers maybe because

1. absences of pollinators due to declining poliinator population

2.weather conditions are preventing pollination

3. prevalence of flooding

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1.Fruits are direct result of pollination. Due to the decrease in the number of pollinators especially orchid bees, some fruit bearing plants produce flowers but no fruit.

Bees decline their population because of parasites, diseases, exposure to chemicals and other environmental factors.

2.Unfavorable factors may prevent the agents of pollination to do their jobs. Bees and other insects may be hindered by wet or cold weather or some use of chemicals.

3.Brazil nut grow in lowland rainforest where there is no flooding.

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3 years ago
How can plasma be described
Afina-wow [57]
Plasma is the fourth state of matter. Plasma is an ionized gas, a gas into which sufficient energy is provided to free electrons from atoms or molecules and to allow both species, ions and electrons to coexist.
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