What are two reasons for why a species might disappear from the fossil record?

1 answer:

5 0

1. One reason is extinctions happen because of some kind of change in the environment where a life form lives. While some species can adapt to the changes, others die, and if enough die, the species becomes extinct. These are some of the biggest factors in the extinctions of particular species. 2. Contaminants in the environment, such as pesticides.

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Chemicals used in chemotherapy treatments to fight cancer can also harm cells in hair follicles and bone marrow

4vir4ik [10]

That is true that it can harm cells

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3 years ago

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Mutualism

Elan Coil [88]

C. is the answer because there us mutualism between both species.

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Which of the following cells engulf antigens by phagocytosis and present fragments of them on their own surfaces for recognition

Colt1911 [192]

Answer:

C) Dendritic cells.

Explanation:

Dendritic cells are types of immune cells that carry out immune responses by presenting antigens on its surface to other immune system cells.

They are derived from the bone marrow and have tree-like structures. Dendritic cells are found in the skin, lungs, nose stomach and intestines. They are phagocytes and are antigen presenting cells (APCs).

Dendritic cells work by capturing the antigens from foreign bodies and processing and presenting these antigens on their cell surfaces for recognition and action by other cells of the immune system.

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4 years ago

For each levels of classification for an organism, describe what it is made up of and the relation to the functions.

svetoff [14.1K]

Answer:

Cells,tissues,organs,organ systems, organism

Explanation:

Linnaeus Taxonomy Includes ,Domains.Each domain subdivided into ,Kingdom ,Phylum ,Class ,Order ,Family.Genus and Species.

Domain Bacteria: Bacteria,Archaea.They are unicellular organism,asexual reproduction,Some are autotrophs but most of them are heterotrophs.

Domain Eukarya has four kingdoms: Animalia, Plantae, Fungi, and Protista. . They are classified based on their cellular organization, their ability to obtain nutrients, and their mode of reproduction.

Kingdom Animalia: They are multicellular heterotrophs.Sexual reproduction,

Kingdom Plantae: It includes all plants and they are autotrophs. They.They make their own food .they are multicellular can reproduce sexually or asexually.

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4 0

3 years ago

According to the theory of evolution ______ traits will become common in a population over time. female favorable male recessive

nirvana33 [79]

Favorable

Traits that enhance survivability and reproduction, to be more specific.<span />

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3 years ago