1
The National Aeronautics and Space Administration (NASA) has designed many robots to help astronauts explore space. Some robots drive around like cars, some are just large arms, and some look like humans. All of these robots can accomplish tasks in space that are too difficult or dangerous for astronauts to do alone.

2

The most famous NASA robots are called the Mars rovers. According to NASA, the wheeled rovers are part of the Mars Exploration Program, “a long-term effort of robotic exploration of the red planet.” The newest rover, Curiosity, landed on Mars in August 2012. The size of a small car, Curiosity carries advanced equipment to analyze the soil and air on Mars. Curiosity has made many exciting discoveries about the planet's environment. Most importantly, it discovered that Mars contains the right ingredients to support life, including carbon, oxygen, and water. Curiosity has also found that astronauts on Mars would be exposed to dangerous levels of radiation. This discovery will help NASA protect its astronauts when they one day travel to Mars.

3

NASA is also building other robots. For example, the Robonaut2 looks like the upper half of a human. The human hand is a very complex and useful tool. It might seem easy for a person to press a button, grasp and lift an object, or turn a knob, but these tasks are very hard for a robot. However, a robot that could perform these tasks would be very useful to astronauts. The Robonaut2 is now being tested at the International Space Station (ISS). Eventually, NASA wants to add legs or wheels to the Robonaut2, which would allow it to move around outside the ISS.

4

Another robot on the ISS is a massive arm called Canadarm2. It can do repair work and transport objects too big for humans to move. Canadarm2 has even caught the Hubble telescope to allow astronauts to repair it. As technology develops, NASA will increasingly rely on robots. They will guide astronauts in new places, give them medical care, and do dangerous work for them. With their special equipment and considerable strength, robots can help humans explore new worlds.


Which sentence BEST explains how the author develops the central idea?

A.
He describes three different NASA robots and the work they do to support NASA.

B.
He explains how the Mars rovers are capable of important tasks like analyzing soil and air.

C.
He describes how NASA robots have human features that can do the work humans did in the past.

D.
He explains NASA's long term goals to incorporate more robotics in space exploration.






Which sentence BEST explains how the author develops the central idea?

A.
He describes three different NASA robots and the work they do to support NASA.

B.
He explains how the Mars rovers are capable of important tasks like analyzing soil and air.

C.
He describes how NASA robots have human features that can do the work humans did in the past.

D.
He explains NASA's long term goals to incorporate more robotics in space exploration.

Answer:

D,B,

Explanation:

Which stage of incomplete metamorphosis is characterized by several molts?
A. nymph
B. caterpillar
C. pupa
D. adult

PLZZ

Which is NOT a characteristic of a vertebrate?

A-have blood

B-have exoskeleton

C-have a nervous system

D-have backbone

E-have protective skin covering

Explain this to me please

anyone could help it would be great

PLEASE HELP WILL GIVE BRAINLIEST!! Please please only answer if you know or can help!! I need help know if what i already put is correct or how i can fix it and also the answer to question E. THANK YOU!

How does microbes help in cleaning the environment
please answer fast

Please help me with this

Edge notes
I took notes on the climate section so hope it helps

All resources are not distributed evenly throughout the world?
Need help fast plsss

will you help me plz plz plz

What do all sponges have in common?

A: They can move.

B: They have a hard, outer shell.

C: They make their own food like plants do.

D: Their bodies are full of pores.

Severe weather can occur anywhere, but not every area experiences the same severe weather. Hurricanes are a type of severe weather that only occurs in certain places. In the space below, explain why hurricanes form in tropical latitudes and not in other places.

What two Units do Astronomers use to calculate Distance to Stars

45 POINTS FOR A CORRECT ANSWER!!!! No links though, those are super sus and I don't like those. If you do something sus I will report you. :) But please help me! I'm super confused and a thorough explanation would really help! Thanks to anyone who answers in advance!

A specific type of bacteria reproduces through binary fission every two hours. If there are seven bacteria to begin with, how many bacteria will there be after four hours?

In humans, having freckles is dominant over not having freckles. Jodie and Brian are both hybrid (Ff) for freckles. They have four children. What is the chance that each child has freckles? (Remember that with each birth, the chance of having a child with or without freckles starts over.

A.) 1 out of 4

B.) 2 out of 4

C.) 3 out of 4

The sea aneome reproduces and the Hydra uses a different asexual process.
True or False.
pls answer this seriously thx.

HELP IM TIMED!!! WILL GIVE BRAINLIEST!!!! Harold makes a Venn diagram to help him compare and contrast mitosis and meiosis. Which label belongs in the region marked Z? Forms diploid cells Creates an even number of cells Includes two rounds of cell division Duplicates body cells.

Scientists are investigating how solar energy can be used along with other energy sources. Which of these BEST describes why scientists are exploring the use of other types of renewable energy sources along with solar energy?

a
The collection of solar energy is limited to daylight hours.
b
Solar energy can be transformed only into electrical energy.
c
The collection of solar energy require constant monitoring.
d
Solar energy is less popular than other types of energy.

How can a scientific idea be revised? PLZ HELP I NEED THIS QUICKLY!!!

Please HELP ME!!! IT'S URGENT!!! Please answer this! I'm giving out 85 Points! Don't take the points and leave without first answering my question!
Which of the following is the correct level of organization from simple to complex?
A. organism - organ - tissue - cell
B. cell - tissue - organ - organism
C. tissue - organ - organism - cell
D. cell - organ - tissue - organism

Explain how the behavior of solitary bees and social bees increases their chances of reproductive success.

Which of these is the deepest part of the ocean floor? (2 points)
guyot
seamount
abyssal plain
ocean trench

please help with will give brainilist
1 What is the most likely meaning of concentration
A thinking about one thing in a focused way
B amount of a substance found in water
C area where something comes from
D chance to be found

2 How could point source pollution best be described?
A Soap suds from washing a car flow into a storm drain.
B Water moves across the watershed, picking up natural or human-made pollutants.
C Chemicals or other contaminants flow into the streams from an obvious and identifiable source.
D Bacteria enters the water from animal waste that is left behind when someone is walking a dog.

3 What could be an easy way to prevent non-point source pollution?
A Let someone else wash your car.
B Keep businesses and industries from disposing of hazardous chemicals.
C Farmers can make sure that waste treatment tanks do not spill or leak into the groundwater.
D Don't use too much fertilizer on your yard. When it rains, there won't be any excess to run off into a storm drain.

4 What percentage of Earth's water is NOT liquid, fresh water that is available for us to drink and use.
A 99%
B 97%
C 3%
D 1%

5 The lake near a small city has become polluted. One group blames the local factory for the pollution. The factory claims that non-point source pollution from the growing city population is to blame.
Which of these tests would NOT help local citizens figure out if the pollution was from a point source or non-point source?
A Compare samples from different places around the lake.
B Observe the areas where water leaves the factory.
C Laboratory analysis to find out what pollutants are in the water.
D Examine the wildlife of the lake to see how it is affected by the pollution.

6 A community is concerned that its river has become polluted. Analysis of water samples shows small amounts of over 20 different chemicals. Which of the following is the most likely cause for the increase in pollution?
A The increase is due to agricultural point source pollution.
B The increase is due to industrial point source pollution.
C The increase is due to residential non-point source pollution.
D It is impossible to determine.

Match these items.

1. send out
2. controls heredity
3. groups of tissues working together
4. take in
5. substance that builds tissues
protein
absorption
excretion
DNA
organ

EXPLAIN THE ANSWER AND I WILL GIVE BRAINLIEST:

Please Explain to me thank you!

ASAP NEED WITHIN 25 MINUTES WHOEVER IS CORRECT WILL MARK BRAINLIEST SHOW PICTURE AND DRAWING PLEASE NO WORDS. IF USED FOR POINTS WILL GET REPORTED
Use the drawing tool to modify the model, showing the direction of prevailing winds in the Northern Hemisphere and convection currents. Label hot and cold air on your convection currents.

Explain the flow of energy from the sun to sunflower and then on to a cardinal that ate the sunflower seeds. How did the energy help all three of these organisms to stay alive?

Please select the word from the list that best fits the definition


contains the reproductive organ of an angiosperm PPLEASE ANSWER WORTH 100 POINTS

Someone please help for 10+ points and marked Brainly

Which ingredient is necessary for photosynthesis?
water
carbon dioxide
sunlight
all of the above​