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Savatey [412]
4 years ago
12

1: Why are siblings not genetically identical even if they have the same parents?

Biology
1 answer:
Anarel [89]4 years ago
4 0
Each sperm and egg cell combine differently, so even if the parents are the same, the genetic material in their reproductive cells is different and can combine in different ways. the children are not clones of their parents, rather combinations of their traits
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within the brain what is the name of the set of structures that work together to produce emotions into God behaviors associated
yan [13]

Answer:

Limbic system is the seat of emotion

Explanation:

Hippocampus and amygdala are substructures

4 0
3 years ago
A conveyer belt moves a 40 kg box at a velocity of 2 m/s. what is the kinetic energy of the box while it is one on the conveyer
faust18 [17]

Answer:

70 the awenser is 70 your welcome :)

5 0
3 years ago
Read 2 more answers
of its brightness. C. Question: How does the addition of calcium to chicken's diet affect the hardness of eggshells? Hypothesis:
klasskru [66]

Answer:

it affects the hardness of the shells because calcium has a high reactivity which causes the shell to be hard

Explanation:

5 0
3 years ago
I need help with all of this!!!!!!!!!!!!!!!!
Nimfa-mama [501]
On number two of the second file, mass is how many atoms there are, while weight is how much he gravitational body the object is on (if any) pulls the object (which is why we weigh nothing in space).

For the first question of the second image, A's answer would be 1,800 g/300cm^3, or 600g/cm^3.

For B, .250g/cm^3 * 200cm^3 is 50g.



For the table: Density is how compact the matter of an object is in a certain amount of space. An example would be that water has a density of 1g/cm^3

Mass is how much matter there IS, for example, a car has more mass than an orange.

Volume is the quantity of 3d space an object has or how "big" it is. For example, a cubed building is the length of one side to the third power

Weight is how much gravity is pulling on an object, and not related to how much stuff an object has other than that, for example, you might weigh 100 kilograms on Earth but none is space, and your matter hasn't changed.

I hope you enjoyed your answer.
4 0
3 years ago
The Precambrian Era is the least understood part of Earth history, yet it is arguably the most important. It began with the form
zhuklara [117]

Greenland has them; the intriguing Burgess shale (Cambrian); they use isotope dating to determine the ages of the rocks; Precambrian circumstances were similar to those on other worlds where life may have emerged.

This is further explained below.

<h3>How does understanding the Precambrian era enhance our chances of finding another planet that could one-day support life?</h3>

Generally, Precambrian rocks are generally exceedingly ancient. Greenland is one such site where scientists have been researching geology and geochronology (the age of the planet) for many years.

To identify whether a rock is of Precambrian origin, its age must be determined, and for such ancient rocks, scientists have developed isotopic dating techniques, which employ the rate at which one radioactive isotope decays into another, which is commonly measured in millions of years.

In conclusion, The Precambrian period spanned a very long time, yet all living organisms were single-celled. Multicellular creatures initially evolved in all their complexity during the Cambrian period

These Precambrian single-celled organisms, on the other hand, were capable of tolerating the harshest environmental conditions of the young Earth, such as scorching heat and gases that would be poisonous to most living things on Earth today, so understanding those early Precambrian conditions may shed light on life forms that could be found on other planets with similarly harsh environments.

Read more about Precambrian

brainly.com/question/13020109

#SPJ1

4 0
2 years ago
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