The right answer is B
The development towards 1.4 Ga of eukaryotes, aerobic organisms such as unicellular algae, will be decisive for the oxygenation of the Earth's atmosphere.
The first multicellular organism is a red alga dating back to 1200 Ma during the Mesoproterozoic era (part of Precambrians). Various forms of life with soft bodies dated between 600 and 541 Ma constitute what is called the Vendian fauna, that is to say the fauna of the Ediacarien.
The appearance of a great diversity of small shelly fauna from 541 Ma will mark what is called the Cambrian explosion.
b. sugar.
c. fat.
d. water.
Protein, took the test and got it right (:
nitrogen fixation
assimilation
carbon cycle
Answer: Nitrogen Fixation
Explanation:
The bacteria that is present in the soil converts the atmospheric nitrogen into the form that can be used by the plants.
The form of nitrogen that is present in the atmosphere is not used by the plants has to be first converted in the form which can be used by the plants.
These bacteria are found in the roots of the legumes which gets food from the roots of the plant and fixes nitrogen for the plant.
Hence, the correct answer is option B
b. organ.
c. tissue.
d. organism.
A group of similar cells that work together to perform a specific function in an organism is referred to as a tissue.
A group of similar cells that perform a specific function is known as a tissue. In biology, this refers to a level of organization in multicellular organisms. Collectively, these similar cells perform functions that benefit the entire organism. Examples include muscle tissue, which is responsible for movement, and epithelial tissue, which protects the body.
Scientific investigation is crucial in the development of the Theory of Natural Selection. This was illustrated by Charles Darwin and Alfred Russel Wallace in the 19th century, who used systematic observation, measurement, and experimentation to formulate the theory that diversity of life arose gradually through natural selection. A notable example is Darwin's research on finches in the Galapagos Islands.
The role of scientific investigation in the development of the Theory of Natural Selection is crucial. Scientific investigation involves the systematic observation, measurement, experiment, and the formation of theories or hypotheses, which are then tested.
In the 19th century, Charles Darwin and Alfred Russel Wallace independently devised the Theory of Natural Selection which proposed that the diversity of life arose through gradual changes in populations over time. They built this theory based on years of careful observation, note-taking, and hypothesis-testing - in essence, systematic scientific investigation.
For example, Darwin observed different variations of finches across the Galapagos Islands and made notes on their physical traits and habitats. Through rigorous analysis of this data, he eventually proposed that each species of finch adapted over generations to best suit its environment via the mechanism of natural selection.
So, scientific investigation played a fundamental role in the formulation and further development of this transformative biological theory.
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