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4vir4ik [10]
3 years ago
12

1. What astronomical event causes day and night?

Medicine
2 answers:
SVEN [57.7K]3 years ago
6 0

Answer:

Explanation:

Bbdn d candy d xbndnc. D. D d. Did you get your mom a birthday present from your work phone and she did a great time at school she said hi to you guys I gotta is your birthday and I’m not going back because y’all have to tell her dad I don’t know yyyyy

ruslelena [56]3 years ago
3 0

Answer:

The change between day and night is caused by the rotation of the Earth on its axis. If the Earth did not rotate as it does, the day/night cycle would be very different or possibly even nonexistent. The changing lengths of days and nights depends on where you are on Earth and the time of year.

Explanation:

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Jasper decides to do some research before purchasing a new lawn mower. Choose the correct way to complete the sentences to expla
Ne4ueva [31]

Answer:

He is looking for maintenance and reliability quality

Explanation:

He is worried that the product will be reliable and able to be maintained regularly when or if broken.

3 0
2 years ago
Nutrient rich blood from the digestive organs must be drained by
Tasya [4]

Answer:

The correct answer is option C. hepatic portal system.

Explanation:

The hepatic portal system involves hepatic portal veins and its accessory tributaries. The hepatic portal system collects blood from digestive organs and spleens that consist of nutrients absorbed from these organs and circulate to the liver.

This system is unique to circulate both oxygenated and deoxygenated blood. This system involves most of the digestive organs from the esophagus to the end of the canal.

Thus, the correct answer is option c. the hepatic portal circulation.  

6 0
3 years ago
A primary reason for needing a new vaccine for influenza each year is that _____. see concept 43.4 (page)
kiruha [24]

A primary reason for needing a new vaccine for influenza each year is that there could be mutation of surface proteins leading to a new outbreak

<h3>What is antigenic drift?</h3>

Antigenic drift is a phenomenon that causes small changes or mutations in the genes of influenza viruses leading to changes in their surface proteins of the virus, which are HA (hemagglutinin) and NA (neuraminidase).

For this reason, new influenza vaccines are produced yearly to alter the effects that may emerge as a result.

Thus, a primary reason for needing a new vaccine for influenza each year is that there could be mutation of surface proteins leading to a new outbreak

Learn more about influenza here:

brainly.com/question/12975693

#SPJ1

8 0
1 year ago
When making an occupied bed a nurse aide should
zimovet [89]

Answer:

make the toe pleat.

Explanation:

When making an occupied bed the nurse aide

SHOULD:

(A) leave the bed in the lowest position.

<h2><em><u>(B) make the toe pleat.</u></em></h2>

(C) leave the bottom sheet untucked.

(D) place soiled linens on the floor.

6 0
2 years ago
Read 2 more answers
A client is being administered chemotherapeutic agents for the treatment of cancer. Which blood cells will be stimulated by the
elena55 [62]

Answer:

The white blood cells i.e. granulocytes and macrophages are specifically stimulated by GM-CSF  in response to chemotherapy in cancer patients.

Explanation:

The colony stimulating factors (CSFs) are the regulators of granulocytes and macrophages in blood. The CSFs has the potential to regenerate the white blood cells damaged during chemotherapy. Thus, CSFs mobilize the stem cells to enhance the immune process and produce hematopoietic cells such as granulocytes, macrophages in cancer patients. The CSFs resemble hormones that are specifically targeted to produce blood cells in specified regions where the quantity of those cells is low. The CSFs belong to a group of regulatory factors also known as cytokines and does not produce only a single cell type but stimulates colonies of different blood cell types for any specific organ. Hematopoietic cells produced by CSF are step-wise and formation of blast colonies take place initially. Afterwards, the blast cells regenerate and differentiated into multiple progenitor cells consisting of granulocytes, monocytes, macrophages, eosinophills, erythroids, and lymphocytes. The progenitor cells in the granulocyte-macrophage lineage matures into neutrophilic granulocytes and macrophages.  

Out of all types of CSF colonies, the Granulocyte-Macrophage (GM-CSF) colony is specially involved in regenerating immune responses in cancer patients. These cytokines stimulates the dendritic cell formation and produces dendritic activity against the cancerous cells. These GM-CSF colonies enhance the immune response of host against melanomas, tumors by reducing their growth and inducing remission. Hence, it can be said that granulocytes and macrophages are infection protective cells and elevates dangerously low levels of white blood cells in cancer patients following chemotherapy. The GM-CSF induction regenerates the bone marrow which is damaged and improves stem cells production.  

6 0
3 years ago
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