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PolarNik [594]
4 years ago
8

First system to classify blood types

Biology
2 answers:
Hunter-Best [27]4 years ago
7 0
ABO is the correct answer
Vera_Pavlovna [14]4 years ago
6 0

Answer: ABO blood group system

Explanation:

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Which of the following is a subsurface event that takes place during the rock cycle? (4 points)
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Why is the luangwa valley sparsely populated​
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3 years ago
Describe the career of an agricultural extension agent, with a brief summary of the responsibilities, education/training, and be
Vilka [71]

Answer:

agricultural extension agent are train expert that acts as a middle man between the farmers and research institute or organisation. they are saddled with the responsibilities of bringing new innovations, technologies, knowledge e.t.c concerning agriculture to farmers and they in turn takes farmers concerns, complains and outcry to research institute.

they help to teach farmers on how too use modern farm tools and technologies. the extension agent use  different methods to arouse or captivate the farmers and they are agent of change in that they help people form their own organizations in order to be able to tackle their problems.

they pass through different training and workshops and belong to a professional body before they can be certified an agricultural extension agent.Agricultural extension trainning/programmes cover a broad area  including improved crop varieties, better livestock control, improved water management, and the control of weeds, pests or plant diseases. they are well paid and derive maximum satisfaction when helping farmers  and proffering solutions to their problems.

Explanation:

6 0
3 years ago
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Phoenix [80]

Answer:

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6 0
3 years ago
What do scientists use to mark boundaries in the geologic time scale?
tekilochka [14]

Era is used to mark the boundaries of geological time scale by using radio carbon dating technique.

Explanation:

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Era is further divided into periods.

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3 years ago
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