PLS HELP 7TH GRADE SCIENCE

Answers

Answer 1

Answer:

I believe A is the answer

Explanation:

I've been debating between D and A, but I'm mostly going for A. Bread mold A is spreading its own mold to Bread mold B, so they have the same kind of mold

Answer 2

I think the answer is A but I’m not sure

Related Questions

ILL GIVE BRAINLIEST!!!

Help! Hello I can’t tell if it’s A or B, my teacher told us it’s either A or B. If someone could please help me understand thank you!

Answers

Answer:

in my opinion i think its B because it makes more sence.

commenting so you can give brainliest to the other person. have a great day :)

According to the map, which body of water was controlled by the Roman Empire?

the Red Sea
the Black Sea
the Caspian Sea
the Persian Gulf

Answers

It is the black sea. Correct answer is the Mediterranean but it’s not one of your choices so Black.

The Mediterranean Sea was controlled by the Roman Empire which was not given in the options.

What is the Mediterranean Sea?

The Mediterranean Sea is a sea connected to the Atlantic Ocean that is encircled by the Mediterranean Basin and nearly entirely surrounded by land on the north, Western and Southern Europe and Anatolia, on the south, North Africa, and on the east, the Levant.

In the history of Western civilization, the sea has played a crucial role. Although the Mediterranean is often included in the Atlantic Ocean, it is widely regarded a separate body of water.

According to geological data, the Mediterranean was shut off from the Atlantic approximately 5.9 million years ago and was partially or fully dry for 600,000 years during the Messinian salinity crisis until being flooded by the Zanclean flood about 5.3 million years ago.

The Roman empire was based on the unification of the Mediterranean Sea.

The Romans, who lived in a little town on the Italian peninsula in the Mediterranean's western basin, had conquered the western basin first, and later the eastern basin of this nearly land-locked body of water.

Hence , the correct answer is The Mediterranean Sea.

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Answer these two questions

Answers

24. A (not so sure tho)
25. B ; because force is equal to the product of mass and acceleration

Hope this helps

Explain why wetlands generally have a high level of biodiversity.

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Answer: Wetlands have a high level of biodiversity because of the amount of resources available.

Explanation: The high levels of accessible water, nutrient levels, and primary productivity allow for a large number and variety of organisms at the base of the food web.

One main difference between a pine tree and an arctic fox is..?

A. The cells of the pine tree have a cell wall, and the cells of the arctic fox do not
B. The arctic fox is a producer while the pine tree is a consumer
C. The pine tree is abiotic while the arctic fox is biotic.
D. The pine tree is not adapted to survive in the cold weather

Please help!

Answers

Answer:

Explanation:

The fox's cells do not have a cell wall, since it is an animal, while the tree does, since it's a plant. B is not correct since they have reversed roles, C is not correct since both are biotic, and D is not correct since both are adapted to cold weather. Hope this helps!

One main difference between a pine tree and an arctic fox is the cells of the pine tree have a cell wall, and the cells of the arctic fox do not.

A plant cell is defferent from the animal cell due to presence of cell wall an large vacuole while the animal cell surrounded by the cell membrane only.

Since, arctic fox is an animal and pine tree is a plant, both the organism found in the cold wether.

Therefore, one main difference between a pine tree and an arctic fox is the cells of the pine tree have a cell wall, and the cells of the arctic fox do not.

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Describe a DNA mutation and how it can affect an offspring.

Answers

A DNA mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people. Mutations range in size; they can affect anywhere from a single DNA building block (base pair) to a large segment of a chromosome that includes multiple genes. DNA mutations can affect an offspring can result in abnormal protein products. Mutations can also introduce new alleles into a population of organisms and increase the population's genetic variation.

Since all cells in our body contain DNA, there are lots of places for mutations to occur; however, some mutations cannot be passed on to offspring and do not matter for evolution. Somatic mutations occur in non-reproductive cells and won't be passed onto offspring. For example, the golden color on half of this Red Delicious apple was caused by a somatic mutation. Its seeds will not carry the mutation.
The only mutations that matter to large-scale evolution are those that can be passed on to offspring. These occur in reproductive cells like eggs and sperm and are called germ line mutations.

An organ within an organism accomplishes tasks. To engage in these tasks, an organ typically requires
energy provided by other organisms.
B
interaction with other organ systems.
С
communication with other organisms.
D
segregation from other organ systems.

Answers

Answer:

I think that it is the first one :)

Explanation:

Pls pls tell me if im wrong, ill do my best to fix it

B. Interaction with other organ systems.

What is an organ ?

An organ within an organism performs specific tasks to maintain the overall health and function of the organism. To accomplish these tasks, an organ typically requires interaction with other organ systems within the organism.

For example, the digestive system works in tandem with the circulatory system to transport nutrients to the cells, while the respiratory system works with the circulatory system to deliver oxygen to the body. By working together, the different organ systems help to maintain the overall health and function of the organism.

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Determine the number of protons, electrons, and neutrons present in an atom of calcium (Ca). Explain how you determined your answer using complete sentences.

Answers

Calcium has a number of 20 protons, electrons, and neutrons. Since it looks like the atoms has a charge to it so it has not gained or lost electrons the number of electrons hasn’t changed. Also the atomic number of the element (or the number 20) determines how many protons, neutrons, and electrons in an element without a charge.

Calcium has a number of 20 protons, electrons, and neutrons.

What are the functions of calcium?

Calcium is a mineral most often associated with healthy bones and teeth, although it also plays an important role in blood clotting, helping muscles to contract, and regulating normal heart rhythms and nerve functions.

Calcium is essential for building and maintaining healthy bones and teeth. Among other roles, it may also help manage blood pressure. It is best to obtain sufficient calcium through dietary sources.

Calcium is useful for the formation of bones and teeth in the human body. The body needs calcium in order to circulate blood, move muscles, and release hormones.

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What is the biggest animal that lives underground?

Answers

Answer:

Bears

Explanation:

Ik that you might think that they live in caves, but they can live in snow burrows, and dug-out earthen as their dens.

Hope this helped :)

Over time, a shallow pond fills with plants, such as duckweed and cattails. These plants-

A:will die off quickly in the shallow water.
B:support ecological succession from pond to marshland.
C:will grow into larger trees as they mature.
D:eventually will dry out and create a fire hazard.
ASAP

Answers

Answer: B or C I think
I am not sure what plants they are but they will make the pond into a home for animals

Answer:

the answer you are looking for is A. they will die off quickly in shallow water

Explanation:

because they are larger plants that do not need a lot of sunlight but needs a lot of oxygen and a shallow pond does provide that oxygen needed but it pushes to much sunlight.

hope this helped some

Which of these is a simple carbohydrate?

A) meat
B) cheese
C) honey
D) pasta

Answers

Answer:

D) Pasta

Explanation:

It has a lot of starch and ot turns into gluten. It's a wheat product and the others arn't.

Answer:

Pasta

Explanation:

Compare the structures for genetics with every day objects. Must include the words: genes, DNA, chromosomes, and nucleus.

Answers

Answer:

Genes play an important role in determining physical traits — how we look —and lots of other stuff about us. They carry information that makes you who you are and what you look like: curly or straight hair, long or short legs, even how you might smile or laugh. Many of these things are passed from one generation to the next in a family by genes. Most cells have one nucleus. The nucleus is a small egg-shaped structure inside the cell which acts like the brain of the cell. It tells every part of the cell what to do. It contains our chromosomes and genes. Chromosomes come in matching sets of pairs and there are hundreds (sometimes thousands) of genes in just one chromosome. The chromosomes and genes are made of DNA.

Based on the discovery of Ötzi the Iceman in 1991, which statement about the nature of scientific knowledge is true?
It is permanent.
It is changeable.
New evidence is often disregarded.
New evidence always confirms the previous evidence.

Answers

Answer:It is changeable.

Explanation:The mummy is invaluable for archaeology and archaeotechnology as well as for medical science, genetics, biology, anthropology, and many other disciplines.

Ötzi is the world's oldest wet mummy and the clothes he wore and equipment he carried are unique; no other organic material from the Copper Age has survived.

*sigh* Another

Your friend tells you that sunlight breaks rocks into small pieces. using what you learned, revise this statement, explaining how the process is more complicated than that.

Answers

The process is called weathering and it’s a cycle of expansion and contraction debilitate the surface of the rock causing it to fragment and break into smaller pieces.

The process of breaking down rocks through sunlight or heat, or any other natural causes is called:

Rock weathering

Rock weathering is a process whereby rocks and other minerals are broken down through sunlight and other natural causes.

There are precise processes which occurs as a result of this as erosion plays a vital role in moving these broken down rocks from one location to another.

As a result of this, to better explain this process to your friend, you will have to let him know how rock weathering works and the roles which erosion, wind, water, plants, and other factors play in this process.

Answers

I honestly don’t get wht u mean

Science and technology are related because technology is created from science and technology is the application of science.

is it snowing where u r

Answers

Answer:

Explanation:

its just cold

It just cold snow and wind

7th grade science help pls

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Answer:

Explanation: the genes carry what is needed to change, and the cells change due to what is happening in the genes

Answer:

with what

Explanation:

becuse how am i going to help

Name two elements that have the same properties as sodium

Answers

Answer:

Two elements that have properties similar to those of the element sodium are Potassium (K) and Lithium (Li)

Explanation:

They are in the same group.

Answer:

Lithium and Potassium

Explanation:

Honestly I don't really know I just looked it up :)

You overheard a classmate in the hallway say the following statement.
???: it gets warmer when you move up the atmosphere because you are getting closer to the sun.”
Do you agree or disagree with him.
If possible could you explain why you agree or disagree it could help me a lot because I’m kinda confused.

Answers

I would say, no it gets colder because you become exposed to space where heat isn’t trapped in

i agree with him because hot air rises. if you lay on the floor it will be cooler, so it’s kinda a vice versa situation if what he says.

Please help!!
What substance, if added to the mixture of salt and sand, could be separated from the mixture using a sieve?
A.) sugar
B.) iron filings
C.) flour
D.) plastic beads

Answers

D.) because the plastic beads are bigger than the holes in the sieve but the sand and salt are not

lol please sm1 help with this picture provided

Answers

Answer:

Explanation:

its directly over the sun

Answer:

Choice D

Explanation:

A solar eclipse is when the moon covers up the sun and so it becomes darker as if it's night on earth. It only lasts a few minutes though.

(10 points) Marine Biology. needed as soon as possible

Match the kelp ecosystem to the organisms that reside there.

1. oarweed
2. nudibranch
3. sponge
4. otter
5. sea urchin
6. rockfish

match each one to its ecosystem,
Ecosystem 1: Kelp Canopy
Ecosystem 2: intermediate Region
Ecosystem 3: Dark Seafloor

Answers

Answer: ecosystem 1: oarweed, rockfish

ecosystem 2: nudibranch, sponge, otter,

ecosystem 3: sea urchin

Explanation: based on my research this is what i could put together

Which best describes Earth’s crust?

It is stationary and unable to move.

It is thicker than the mantle and the core.

It is located between the outer and the inner core.

It is composed of continental and oceanic plates.

Answers

Answer:

Explanation:

It is composed of continental and oceanic plates.

d is the best answer as there are tectonic plates on the earths crust ;)

Only answer if you have an answer to one of the questions. Thank you.

Answers

assuming maintains internal conditions means homeostasis, your body defecates and urinates any toxins from food or drink. this is because some food is harmful to your blood, heart, stomach, etc and can cause even more harm if they are not eliminated.
hope this helps!!! :)

Who were carriers for of hemophilia in the royal family?

Answers

She is the carrier( the queen)

We can think of electromagnetic waves as a kind of ongoing message being sent out by the universe. Humans are able to naturally access only a portion of this message.

What information from the passage best supports this statement?

a
The waves emitted by our physical world make it possible for us to communicate over vast distances.
b
The human eye is only sensitive to a portion of the electromagnetic spectrum.
c
Without light, we wouldn't be able to process the visible world.
d
Mankind has invented tools to harness the information contained within electromagnetic radiation.

Answers

Answer: im petty sure that it’s either A or B
Hope this helps at least a little and sorry if I’m wrong I don’t study this :)

Option (B) the human eye is only sensitive to a portion of the electromagnetic spectrum (visible lights) best supports above statement.

What are electromagnetic waves?

Electromagnetic radiation is made up of electromagnetic field waves that travel through space carrying electromagnetic radiant energy. These waves are carried by electromagnetic radiation. Radio waves, microwaves, infrared, light, ultraviolet, X-rays, and gamma rays are all components of this spectrum. The electromagnetic spectrum is made up of all of these different types of waves.

We can only see a small portion of the electromagnetic radiation that exists, which is the portion that we refer to as visible light. However, all electromagnetic radiation is light. These cone-shaped cells in our eyes function as receivers and are tuned to the wavelengths that are present in this particular narrow band of the electromagnetic spectrum.

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Why are cells called the building blocks of an organism?

Will give brainliest help!!! I am timed

Answers

Answer:

Cells are called the building block of an organism because the organisms are made of cells.

Explanation:

I hopw that helps :))))))))))))

the organisms are made of cells, thats the reason it is called that.

NEED ANSWERS ASAP!

While visiting the beach during the summer vacation, a sea breeze keeps you cool and comfortable during the hottest part of the day. Which BEST explains why this happens?

A - warm air rises over the land allows cooler air from the ocean to blow inland

B - cool air rising over lands allows warm air from the ocean to blow inland

C - there are similarities in temperature between land and water

D - a thunderstorm is approaching

Answers

Answer:

warm air rising over land allows cooler air from the ocean to blow inland.

Explanation:

B- warm air rises over the land allows cooler air from the ocean to blow inland

What happens when icebergs melt?

Answers

They turn to water right-

Answer:

Melting icebergs will cause the sea level to rise. Icebergs are already floating in the ocean, so melting will not raise the sea level. Melting of land-based ice (such as glaciers) will raise sea level.

Explanation:

i’m just a little confused can someone explain ?

Answers

Basically, there is a presentation of types of food and the amount of those foods over 50 years in this graph. This means the graph is showing amounts of certain foods over the time period. I'm guessing that basing off of the the previous text you're just noting a change in the breaks of birds based off of the diet available to them at certain times. The adaptations and natural selection will explain the changes because due to certain limited and available foods the diet of the birds change.

noooooooooooooooooooooooooooooo

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