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olchik [2.2K]
3 years ago
14

a ------- is a type of research that involves observation and collecting data but does not include a control a. independent vari

able B. dependent variable c. investigation d. experimentation
Biology
1 answer:
butalik [34]3 years ago
3 0
I think the correct answer is C. An investigation is a type of research that involves observation and collection of data but it does not include a control. In an investigation, all data and information that is related to the subject matter are collected it does not think of any factors that may affect the subject.
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Mutualism, both of the animals benefit from the relationship. 
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4 years ago
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In some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." Male ligers ar
Pachacha [2.7K]

Answer:

a prezygotic barrier

Explanation:

Both wild tigers and lions are said to be reproductively isolated.

Reproductive isolation is defined as the existence of barrier between organisms of different species such that they cannot reproduce.

The mechanisms of reproductive isolation varies. While some act to prevent the formation of zygotes (in case of mating) between organisms of different species, some ensures that the resulting zygotes are invalid.

Reproductive isolation mechanisms that act to prevent fertilization and formation of zygotes are referred to as prezygotic mechanisms while those that ensure that invalid zygotes result (in case of successful fertilization) are referred to post zygotic mechanisms.

<em>The natural differences in the ranges of wild tigers and lions ensure that both animals do not mate with each other, let alone results in zygote. This is a form of pre-zygotic reproductive isolation mechanism.</em>

7 0
3 years ago
Soot plays an important role in climate change , but _______ is still the leading cause of earths changing climate.
NARA [144]
The answer for the above question is carbon dioxide.
Climate change is caused by various factors which includes greenhouse effect and global warming. Green house gases are responsible for warming, and humans emit them in a variety of ways. The most common being from the combustion of fuels in cars, factories and electricity production. The gas responsible for the most global warming is carbon dioxide, other contributors include methane, nitrous oxide from fertilizers among others

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ipn [44]
Nervous system is the body system that is involved in coordinating and controlling body movements
4 0
2 years ago
Why are offspring of organisms that reproduce sexually not genetically identical to their parents
Nat2105 [25]

Answer:

The offspring of organisms that is reproduce through sexually are not genetically identical to their parents because the offspring contains genes from two parents.

Explanation:

Identical offspring is only formed when offspring is produced from one parent through asexual reproduction such as building, binary fission and fragmentation. In sexual reproduction, offspring is produced by the mating of two organisms i. e. male and female organism. That's why genes of offspring are different from their parents and offspring is not identical to parents.

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3 years ago
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