Answer:
B
Explanation:
Answer B is correct:
Because the biologists are continuing to learn more and more about such minute organisms, protozoan systematics – that is, the taxonomy (classification) and the evolutionary interrelationships of major groups of protozoa – remains a topic of debate and change, still today.
Some of the rather LARGE and unwieldy taxonomic groupings of past years are particularly subject to revision with expansion of and refinement in the knowledge about the members of those – and related – assemblages. Paradoxically, the protozoa themselves are becoming more difficult to define with precision as our information about them and other microbial assemblages increases. Thus, presenting a single satisfactory circumscribed definition for them is not an easy task.
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Answer A sounds so funny.
Answer C and D are false because Protozoans are usually single-celled and heterotrophic.
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Hope this answer can help you. Have a nice day!
The first step in the formation of the human embrayo and it is called fertilization.
<h3>What is fertilization?</h3>
The first step in the formation of a human embrayo is called fertilization. The term fertilization has to do with fusion of the male and female gametes to form a zygote.
Hence, the diagram as shown is the first step in the formation of the human embrayo and it is called fertilization.
Learn more about fertilization: brainly.com/question/17991559
Answer:
Astronomy.
Explanation:
Astronomy.
Astronomy is science of stars and cosmos. It is a natural science that analyses the objects and events of celestial bodies. To demonstrate their genesis and evolution, this uses maths, physics, and chemistry. Planets, moons, stars, nebulae, galaxies, and comets are of interest.
The Tropic of Cancer is the latitude circle 23.5 degrees north,whereas the Arctic and Antarctic Circles at ±66.5 degrees latitude.
Answer: A. Carbon dioxide is a product.
Explanation: During cellular respiration the body takes in oxygen and uses it and turns it into carbon dioxide and lets it out, thus carbon dioxide is a product.
