BIOLOGY MIDDLE SCHOOL

2.Which volcanic feature is formed when lava flows out evenly from a fissure?

a composite volcano

b lava plateau

c cinder cone

d caldera

Answers

Answer 1
Answer: I believe It is A because fissure eruptions are common on large volcanoes and also is built up by many layers of hardened lava, tephra, pumice, and volcanic ash.

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A scientist exposed iron fillings to water and air in order to test the ability of iron metal to react. Which is the correct match of the type of change happening and the property being tested during the process? A. Physical change; physical property of reactivityB. Physical change; physical property of flammability C. Chemical change; chemical property of reactivity D. Chemical change; chemical property of flammability
Which type of melanin is produced by the version of the MC1R gene most prevalent among people of African ancestry?

A plant-cell organelle

Answers

There's a ton of different organelles. Most are the same as the organelles of an animal cell. Here's a list:

Cell Wall
Cell Membrane
Vacuole
Nucleus
Nucleolus
Nuclear Membrane
Chloroplast
Mitochondrion
Golgi Body
Ribosomes
Smooth ER
Rough ER
Centrosome
Amyloplast
Cytoplasm

I love doing this for other students. I would let you keep the points if I could.

Which is the best description of weathering?A. crystallizing to form minerals
   B. breaking rocks into fragments by physical or chemical means
   C. compacting rocks
   D. cementing rocks together

Answers

weathering:
A) crystallization to form minerals
there minerals are usually sedimentary rock.

Which of the following has a negative electrical charge?o cation only
o anion only
O Both cations and anions have negative charge.​

Answers

Answer:An ion (/ˈaɪɒn, -ən/)[1] is an atom or molecule that has a net electrical charge

Explanation:

What is the role of cooling air in producing precipitation from clouds?

Answers

Clouds are condensed droplets or ice crystals from atmospheric water vapor. Clouds form by the rising and cooling of air caused by convection, topography, convergence, and frontal lifting. Convection occurs when the Sun's radiation heats the ground surface, and warm air rises, cooling as it goes. Air also is cooled if an air mass is forced to move upward as a result of higher topography (e.g., a mountain range) in a process known as orographic lifting. Interestingly, when the air mass descends on the other side of the mountain, it warms and the clouds may disappear as the droplets transfer back to vapor. *

The counterclockwise motion of a low-pressure center draws air inward, and the convergence forces the air upward. Air also is lifted and cooled along either a cold front or a warm front. A cold front is the leading edge of an air mass that is colder than the air it is replacing. The front forms a wedge that pushes under the warmer air ahead, lifting it. A warm front is the leading edge of an air mass warmer than the air it is replacing. As the air mass pushes forward, the warm air slides up over the wedge of cold air ahead of it, as shown in the following figure.

How many bones do monkeys have?

Answers

A monkey has 117 bones. But, there are over 250 species of monkey, so it can vary monkey to monkey.

In which symbiotic relationship does one organism benefit while the other organism is harmed? A.
mutualism

B.
commensalism

C.
parasitism

D.
competition

I will friend and thank for best answer

Answers

Parasitism. It is a non-shared connection between species, where one species, the parasite, benefits to the detriment of the other, the host. Customarily parasite alluded fundamentally to living beings unmistakable to the bare eye, or macroparasites.
It is a parasitic relationship, where parasite is benefitted and the host if harmed. Example of this includes, tapeworm which attaches themselves onto the intestine of the animals like pig, cow wtc, and use their undigested food, and cause nutrition deprivation in them.
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Which development in plants has contributed to the evolution of large trees?
According to scientific evidence, earth’s earliest atmosphere lacked oxygen. Over time, oxygen was added to the atmosphere.Which statements explain how this change occurred and how it affected life on earth? Choose all answers that are correct. A. Adding oxygen to earth's atmosphere allowed for the development of prokaryotic organisms, which need oxygen to carry out many of their life processes. B. Adding oxygen to earth's atmosphere allowed for the development of eukaryotic organisms, which need oxygen to carry out many of their life processes. C. Oxygen is needed to carry out photosynthesis. When cyanobacteria evolved, they began to carry out photosynthesis. D. Oxygen is a product of photosynthesis. When cyanobacteria evolved, they began to carry out photosynthe