PLEASE HELPPP ASAP> NO LINK OR UNRELATED ANSWERS
The Human Body in Space

NASA monitors the bodies of animals and humans to see how they react to extended periods in space. When the body is in space, it no longer has the strong pull of Earth’s gravity on it. Because the body’s systems normally function in the presence of gravity, NASA has been studying the effects of weightlessness on the body.

Weightlessness Takes a Toll

On Earth, the heart naturally pumps blood more forcefully to the upper body than to the lower body, where gravity helps the blood flow down. In space, the heart continues to pump the blood more forcefully to the upper body, but the balancing force of gravity does not pull the blood to the lower body. This uneven blood flow causes astronauts’ faces to become puffy and their lower bodies to become thin.
The shape of the spine also changes in space. Without the force of gravity pushing the vertebrae closer together, the spine stretches out and causes pain in some cases.
Another system affected in space is the body’s balancing system. To balance itself, the brain acquires information from the eyes, muscles and tendons, and a set of sensors (called the vestibular apparatus) in the inner ear. In space, the only balancing information that can be relied on enters through the eyes, so astronauts have difficulty moving around.
The most serious problem for astronauts, however, is bone loss. In space, the bones lose minerals, such as calcium, potassium, and sodium. The bone loss in the legs can be as high as ten percent, and even exercise does not completely solve the problem.

Laboratory in Space

With the completion of the International Space Station (ISS), NASA will be able to study some of the effects of long-term exposure to weightlessness. NASA also plans to expand its studies to better understand how the immune system is affected and how radiation, which is much greater in space,
affects humans. Radiation can pose serious health threats, including cancer and neurological damage.
Because people working together on the ISS will be in small spaces for long periods of time, NASA also plans to study how working in confined spaces affects astronauts’ personalities.

Infer What does NASA expect to gain by studying the effects of long-term space travel on the human body?

Answer:

Knowledge gained during the early years of human spaceflight indicated an adaptation to the new environment. While the empirical evidence was limited, the biomedical data indicated that microgravity alters the musculoskeletal, cardiovascular, and neurosensory systems.

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!

HELPPPPPPPPP !!!!!!!!!!!!!

Help me please??????????

Sperm cells swim through liquid. Explain how a sperm cell is adapted to reduce friction as it swims.

What type of blood vessels returns blood to the heart?
If you get this right I will give you Brianliest even if you attempt.
Not lying​

In what way(s) do we use energy?

A.All answers are correct
B.To make heat
C.To transport ourselves and products
D.To make electricity

Edwin Hubble was an American astronomer who played a crucial role in collecting evidence to support the theory that the universe is constantly expanding outward and is not simply static. He used light from distance stars to calculate their movement.

Meanwhile, around this same period of time, a Russian physicist by the name of Mikhail Lomonosov worked tirelessly in his lab studying different chemical reactions. Lomonosov would later help in developing the Law of Mass Conservation which states that during a chemical reaction the total mass of the substances before the reaction is equal to the total mass after the chemical reaction.

How are the methods used in the pursuit of a scientific explanation different between Edwin Hubble and Mikhail Lomonosov?


A) Edwin Hubble carefully identified and manipulated variables to answer questions; Mikhail Lomonosov made observations about the natural world.

B) Edwin Hubble made observations about what he studied; Mikhail Lomonosov did not

C) Edwin Hubble and Mikhail Lomonosov both used scientific equipment and collected evidence

D) Edwin Hubble made observations about the natural world; Mikhail Lomonosov carefully identified and manipulated variables to answer questions.

can we prepare slides without stain? justify.​

Why can mass bleaching wipe out the whole ecosystem

Which of the following is something almost everyone can do to reduce his or
her carbon footprint?
O A. Take warmer showers. .
B. Turn off the lights when leaving the room.
O C. Cook with the oven more often.
D. Use the fireplace when a house is cold.
SUBMIT

Evaluate the use of stem cells from a patients own bone marrow instead of stem cells from an embryo. You must give a conclusion.

1. What causes the inside of the cell to be more negative compared to the outside of the cell? Resting Potential, Action Potential

Answer the following questions:
⦁ What is the purpose/function of the Respiratory System?
⦁ What is the purpose of the tiny hairs called cilia in your nose?
⦁ What are the purposes of the pharynx?
⦁ What is the purpose of the epiglottis?
⦁ How is the respiratory system linked to the cardiovascular system

Marine biologists are studying stickleback fish populations. There are two distinct variations in the sticklebacks based on phenotypes. They are found with the three spines more commonly in marine ecosystems while they are more commonly found without the three spines in freshwater ecosystems. This has been observed in many marine and freshwater ecosystems across the globe. What explains the variation seen in the image here across different aquatic ecosystems?

Why should organisms that produce more offspring have a more likely chance of survival?

Complete the sentence below by selecting the correct words from the drop-down menus.
Factors that affect natural selection include VARIATIONS or SIMILARITIES, UNDERPOPULATION or OVERPOPULATION, and ADAPTION or EXTINCTION.

Many organizations release indexes used to measure the development of the world's countries. As we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. In your opinion, what are the three most important factors we can use to determine how developed a country might be? Explain your answers in a few sentences. << Read Less

If the blockage is removed from the blood vessel, what will happen to blood flow after removal?

C. What is the genotype for patchwork fish?
2. What happens if you breed a patchwork fish with a fish that only has Blue Scales
a. What is the probability of having fish with red scales?
b. What is the probability of having fish with patchwork scales
P
R_
B_
BS
_R_
3. Two patchwork fish are crossed. What is the probability that they will have patchwork fish?

The ______ system helps us to break down our food.
A. digestive

B. muscular

C. circulatory

Shaniah has a very high-pitched voice, If she was examined, what would she be
found to have?

what is the probability for a child to inherit one of two alleles from her dad??

a:100%
b: 50%
c: 0%
d: impossible to know

What process can change all three rock types in a new metamorphic rock?

Which of the following human activities will have the greatest negative impact on the balance of organisms within an ocean ecosystem?
A. mapping of the ocean floor by marine scientists.
B. commercial fishing to provide food for humans
C. recreational boating in rivers, lakes, and streams.
D. monitoring of major global ocean currents

Which of the following is one of the reasons a sea breeze occurs during the day?
A
The land cools faster than the water.
B
The land cools slower than the water
С
The land warms faster than the water
D
The land warms slower than the water

If given the template strand of DNA below, what is the complementary sequence? 5’ A T G T A T G C C A A T G C A 3’

During cell division the ONLY cell organelle that breaks down and reforms is the

This illustration shows the flexion of the elbow joint. Identify two body systems that play a role in this action, and describe how they work together to flex the elbow.

How does wind affect the amount of rain?

HELP Which of the following is a correctly described example of negative feedback?


A thermostat controls the temperature at random times of the day by producing heat every 2 hours regardless of how warm the room is.


B thermostat turns on and off throughout the day to keep the temperature approximately the same or at a set point.


C thermostat steadily increases the temperature throughout the day.