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Pani-rosa [81]
3 years ago
12

When does a fetus develop a nervous system?

Biology
1 answer:
katovenus [111]3 years ago
8 0
The fifth week of pregnancy.
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1. Is the Earth one solid piece of Rock?
kicyunya [14]

Answer:

The Earth is made up of many rocky layers. .

Explanation:

The solid, outer layer is called the crust. Below the crust lies a layer of very hot, almost solid rock called the mantle

4 0
2 years ago
How does the pharmacy computer system sequence multiple plans for one patient?
lions [1.4K]

There should be options for this question.

They are:

A. By plan type

B. By determining the last plan inactivated

C. By the order they were entered

D. By the BIN.

The correct answer is A. By plan type.

The computer system groups together multiple plans for one patient and organizes them by plan type. Therefore when a medical professional goes to look at the patient pharmacy record they can see each specific plan type for the patient in order.  

4 0
2 years ago
Read 2 more answers
Humans are the only species that can endanger another species.<br><br> True<br> False
tensa zangetsu [6.8K]
False is your answer.
5 0
3 years ago
Read 2 more answers
The Brazil nut tree, Bertholletia excels (n = 17), is native to tropical rain forests of South America. It is a hardwood tree th
Anna71 [15]

Answer:

Answer is option A.

Orchid bees are to Brazil nut trees as breezes are to pine trees.

Explanation:

In Brazil nut trees, the female orchid bees act as pollinators that help in pollination. In pine trees, wind or breeze helps in pollination.

Pine trees are gymnosperms and so they do not have flowers to attract pollinators like bees or butterflies or birds. They are wind-pollinated. Pine trees are monoecious i.e., both male and female reproductive structures (pine cones) are present on the same tree.

The male cones (catkins) produce pollen grains that are lightweight, less sticky and have air bladders or small wing-like structures. As a result of these features, the pollen grains can be easily carried and dispersed by the breeze. In order to prevent self pollination (pollen falling on the female cones of the same tree), the male cones are normally located on the lower branches of the pine tree.  

The female cones are located on the upper branches of the tree and the center of the cone contains eggs or ovules. The pollen grains that are carried by the wind, fall on the female cone of another pine tree. Each pollen grain grows a pollen tube into the center of the cone and the nucleus cell of the pollen travels through the tube and reaches the egg, where it combines with the egg to form an embryo. The embryo eventually grows into a seed. The seeds of pine trees are then dispersed by wind or animals such as squirrels.

6 0
3 years ago
he viral capsid _______. Multiple Choice is dissolved engulfs the viral spikes surrounds the viral matrix protein becomes comple
Studentka2010 [4]

Answer:

Becomes completely enclosed by the region of the cell membrane into which the spikes and matrix protein are embedded

Explanation:

The viral capsid is a <em>protein shell that sorrounds a virus</em>, it serves as a criterion for the classification of viruses and <em>it encloses the genetic material of the virus and it has glycoproteins (spikes and matrix) embedded in it.</em>

I hope you find this information sueful and interesting! Good luck!

7 0
3 years ago
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