SPACE! What is a main sequence star? What event causes a star to leave the main sequence?

Explanation:

The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness.

Food Web Questions
What is used to indicate the flow of energy in a diagram of a food chain or food web?


What three things can happen to energy moving from step to step in a food chain or food web?


Define food web.


What is meant by a trophic level?


Define autotroph.



The 2ndt trophic level consists of _______________ consumers called _________________.


Secondary consumers may be _______________ eating meat or _______________ that eat both plants and animals.


Identify the organisms that occupy the 4th trophic level.


The 5th trophic level includes _____________ consumers that eat _____________ consumers.


Give an example of 3 detritivores. On what do they feed?


What does external digestion mean?


Both ______________ and ______________act as decomposers


Can an organism fill more than one trophic level --- yes or no? Give an example.

What are 4 different types of bones?
Please help me! <3 :)

ASAP PLZZZ HELP NO LINKS 15 POINTS

cells that have a nucleus, membrane-bound organelles, and more complexity are called what?

WILL GIVE 90 POINTS

What do we call a disease that can be transmitted from one person to another?
A. Infectious disease
B. Touch disease
C. Endemic disease
D. Chronic sisease

I need help on this assignment pls (Please complete whole thing not just list a single link)
Assignment: The World’s Energy Exploration The amount of energy available in the form of nonrenewable resources is finite. You can personally make a difference in making sure that the world continues to have enough energy to supply electricity to everyone who needs it. Today’s assignment is an opportunity to do research into ways that you can make an impact. Your research will focus on creating a plan that you want to present to one of the following: a) your family b) a club or team that you are a part of c) a community organization like your church or school The purpose of your plan is to see the world’s energy last a long time. There are a couple of categories to consider, such as different ways to do the following things: a) Use renewable resources (example: adding solar panels to a building) b) Conserve energy (example: reducing the amount of electricity used) c) Reduce, reuse, and recycle (example: planning a recycling drive) d) Add “green spaces” (example: growing vegetables in a garden) You need to find three websites related to your idea. Look for other individuals or groups that have accomplished a similar goal. Once you have found your websites, answer the following questions. Number each question and make sure to write your answers in complete sentences. 1. What project do you want to propose and who do you want to participate? 2. What are the three websites you found that helped you choose a project and/or described other people doing similar projects? 3. After reading their stories and thinking about your own ideas, describe your idea for your project. Think of your answer as your presentation of your idea to your group. Make sure to tell them what you want to accomplish and why it is important. 4. In your research, find a difficulty that others faced that you might need to consider. Explain the issue and how it might impact your plan. 5. Choose one story from your research that you found most inspiring. Share a quotation and explain why this was meaningful.

Memories of a Memory
Have you ever witnessed something amazing, shocking or surprising and found when describing the event that your story seems to change the more you tell it? Have you ever experienced a time when you couldn't really describe something you saw in a way that others could understand? If so, you may understand why some experts think eyewitness testimony is unreliable as evidence in scientific inquiries and trials. New insights into human memory suggest human memories are really a mixture of many non-factual things.

First, memory is vague. Imagine your room at home or a classroom you see every day. Most likely, you could describe the room very generally. You could name the color of the walls, the floors, the decorations. But the image you describe will never be as specific or detailed as if you were looking at the actual room. Memory tends to save a blurry image of what we have seen rather than specific details. So when a witness tries to identify someone, her brain may recall that the person was tall, but not be able to say how tall when faced with several tall people. There are lots of different kinds of "tall."

Second, memory uses general knowledge to fill in gaps. Our brains reconstruct events and scenes when we remember something. To do this, our brains use other memories and other stories when there are gaps. For example, one day at a library you go to quite frequently, you witness an argument between a library patron and one of the librarians. Later, when telling a friend about the event, your brain may remember a familiar librarian behind the desk rather than the actual participant simply because it is recreating a familiar scene. In effect, your brain is combining memories to help you tell the story.

Third, your memory changes over time. It also changes the more you retell the story. Documented cases have shown eyewitnesses adding detail to testimony that could not have been known at the time of the event. Research has also shown that the more a witness's account is told, the less accurate it is. You may have noticed this yourself. The next time you are retelling a story, notice what you add, or what your brain wants to add, to the account. You may also notice that you drop certain details from previous tellings of the story.

With individual memories all jumbled up with each other, it is hard to believe we ever know anything to be true. Did you really break your mother's favorite vase when you were three? Was that really your father throwing rocks into the river with you when you were seven? The human brain may be quite remarkable indeed. When it comes to memory, however, we may want to start carrying video cameras if we want to record the true picture.

Which phrase from the text most clearly explains the main idea of the third paragraph? (5 points)

Group of answer choices

Memory uses general knowledge

Other memories and other stories

When telling a friend about the event

Rather than the actual participant

What are the diseases that are not caused by micro-organism called?

A. Non-infectious disease
B. Viral disease
C. Infectious disease
D. Contagious disease

Biology (10 point)



PBS Hunting the Elements - Be specific. Use a couple sentences to describe each.

While studying habitats, a science class took samples from a stream near their school to learn more about the school’s habitat. A student looked at the stream water under a microscope. Below is a list of observations the students recorded after observing an aquatic organism in the stream water sample.



Observations:

Contains a nucleus

Reproduces asexually

Uses pseudopods to move

Is unicellular



What conclusion can be made based on the student’s observations?

Which list of characteristics describes organisms classified as animals?

A) Multicellular, eukaryotic, autotrophic

B) Unicellular, eukaryotic, heterotrophic

C) Multicellular, eukaryotic, heterotrophic

D) Unicellular, prokaryotic, autotrophic

What are different types of pesticides and what are they used for?

Please select the word from the list that best fits the definition Longitudinal wave that is the first to reach the location of an earthquake
A. P wave
B. destructive wave
C. s wave
D. seismograph

How can air pollution effect humans?

Scenario-
Mr. Retallack is singing karaoke and decides to record his next hit song, “Why you need to know I am Teacher of the Year”. After recording, he notices he made a mistake. What does he need to do to fix the song?


THIS IS FOR SCIENCE

How does the heart pump blood from the right ventricle to the lungs and the left ventricle to the rest of the body? (mention the arteries and veins)
Thenks for helping! I'll mark brainliest :))

question and answer in image.

The table lists characteristics of a specific taxonomic classification. (the picture below)

Which kingdom is best described by these characteristics?


A) Kingdom Eubacteria

B) Kingdom Fungi

C) Kingdom Archaeabacteria

D) Kingdom Protista

Who is Nichola tesla. Did he make the tesla car? Because the health inspector will come anytime now! >:D. My question exactly who is Nichola tesla?

can u feel this out for me please its Respiratory System

SPACE! Pretty please help ASAP!!! VERY IMPORTANT! It should be pretty easy, just look in the picture! NO LINKS OR I'LL BAN YOU!

What is the difference between internal and external organs

im dum.b and suck at science so can someone answer? please

Describe how heat is generated using one non-renewable resource such as coal, natural gas, or oil.

Help!!! I need to answer this prompt but i dont know what to write

Respond.

6.


7.


3.


4.


2.


0.


1.


8.


9.


23.


69.

NEED ASAP BUT TAKE WEB CAPTURE (or screenshot) (web capture: ctrl+shift+s) THEN DRAW ON PICTURE BECAUSE I DONT WANT WORDS
Use the drawing tool to draw a model that shows how the Himalayas influence the climate of the Plateau of Tibet. Use arrows and text to describe the air movement that causes the dryness of the plateau. Identify and label these elements:

water evaporation
rain shadow
the direction of the wind at different locations on the mountain, ocean, and plateau

Describe how heat is generated using one renewable resource such as wind, water, or the Sun.

Important test and i have limited time so please hurry <3
also is this the right subject for these questions or no i honestly dont know

Cystic fibrosis is a genetic disorder in which a particular gene does not make protein the way that it otherwise normally would. Given that cystic fibrosis is a genetic disorder, how would an individual most likely contract this disease?


A. a person’s parents would have to carry genetic material for cystic fibrosis within their chromosomes which could then be passed down.

B. a person’s parents would have to carry genetic material for cystic fibrosis within their chloroplasts which could then be passed down.

C. a person would have to have been exposed to environmental influences such as living next to a nuclear power plant

D. genetic disorders can be transmitted in so many ways that it is impossible to tell how a person acquired the disease.