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Lemur [1.5K]
3 years ago
7

What do 8th graders do for science

Biology
2 answers:
d1i1m1o1n [39]3 years ago
8 0
They start to learn about elements and priciples of an element

sineoko [7]3 years ago
6 0
What do you mean "science?" Which? Im in 8th grade taking Biology, Chemistry, and Physics.
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Which of the following is a true statement about lava that contains large amounts of dissolved gases? Lava that produces violent
anygoal [31]

<u>Answer:</u>

<em>The dissolved gases produce violent eruption as they escape. </em>

<u>Explanation:</u>

Magma contains dissolved gases and these dissolved gases induce vapor <em>pressure on the magma.</em> The magma is able to remain in the dissolved state itself without erupting because this vapor pressure is less than the confining pressure of the <em>rock surrounding the magma. </em>

One the vapor pressure exceeds this confining pressure the dissolved gases begin to  expand and<em> forms small gas bubbles</em>.

The <em>density of these gas bubbles</em> called vesicles is less than the density of magma and thus naturally tries to push out. When the gas bubbles escape the magma is also pushed out. Thus greater <em>amount of dissolved gases result in violent eruptions. </em>

"

8 0
4 years ago
How can mutations affect evolutionary processes? A) Mutations are novel genes that increase an organism’s fitness in the environ
Fed [463]

Answer:

Option C

Explanation:

Option A is incorrect as mutations may be detrimental to the organism and are not always beneficial. Option B is incorrect as there are instances where mutations may enable organisms to be better adapted to the environment. Option D is incorrect as genotypes are not selected for or selected against by environmental pressures, it is only the phenotype (exhibitable/ visible traits) that can be selected for or against, hence option C is the answer.

5 0
3 years ago
Do you think red blood cells can reproduce themselves? Why or why not?
strojnjashka [21]
They don't reproduce, as far as I know. They are produced in bone marrow.
8 0
3 years ago
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Here is a model of Earth's yearly orbit around the Sun. In this model, the names of the seasons apply only to the northern hemis
Usimov [2.4K]

Answer:

D

Explanation:

4 0
3 years ago
Read 2 more answers
Please help me with these!
TEA [102]

Answer:

A. cm .5 mm5

B. cm 3.3 mm33

C. cm 5.5 mm 55

d. cm 7 mm 70

e. cm 8.3 mm 83

Explanation:

you would move the decimal point over to the right one time because centi come before mili.

5 0
3 years ago
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