Which of the following describes a characteristie of blood viscosity
a. Blood viscosity describes how red your blood is.
b. Blood viscosity describes how thick or thin your blood is,
Blood viscosity describes amount of oxyven found in your blood,
d. Blood viscosity describes the amount of pressure your blood places on the walls of your vions and
arteries,

Which statement best describes evolution in a population? A. It is a change in how common a certain genetic trait of a species is from one generation to the next. B. It is a gene for a trait that helps an individual reproduce more times during its life C. It is a trait that helps an organism survive longer and produce more offspring D. It is a process by which an individual with a helpful trait produces many offspring with the same trait.​

Read the following summary, which describes blood flow and heart output in space. Then, answer the question.

The heart doesn't have to do as much work to pump blood when in orbit. After only one day beyond Earth's gravity, astronauts have a lower blood volume. They can lose as much as 20 percent of their blood volume while on a space mission. Since the body has less blood to push around and the heart is pushing more blood with each beat, an astronaut's heart rate also slows down to compensate.

What process is being described?

Breathing
Excretion
Homeostasis
Respiration

Chandra X-ray observatory has reported that they have found a new star near our solar system. The Chandra X-ray telescope detects x-rays in space. What does the use of the x-ray telescope review about the newly found star? ( PLS EXPLAIN Y THE ANSWER IS CORRECT)

a. The star produces electromagnetic waves with shorter wavelengths than visible light.
b. The star produces electromagnetic waves with lower frequencies than visible light.
c. The star produces pictures in addition to electromagnetic waves.
d. The star produces vibrating electrons

In a food web, all arrows should point to
A. decomposers

B. consumers

C. producers

When gases trap heat in the atmosphere causing the temperature to rise this is called the greenhouse effect.
A. True

B. False

Two species of three-spined stickleback fish have been found together in five different lakes. The larger, bottom-dwelling species feeds on large prey close to shore. A surface-dwelling species feeds on small plankton in open water. DNA analysis shows that the two species in each lake are more closely related to each other than they are to any of the other species in the lake. Which prezygotic mechanism most likely allowed divergence of an ancestral species into these present-day species

Predict what would happen if a person had too few target cell receptors on the thyroid gland? (100 points)

Please only respond if you know the answer and links will be reported

This makes a water molecule a ___ which allows for other water molecules to "stick" together
A . non-polar molecule
B. ionic molecule
C. polar molecule

4

Select the correct answer.

Jonathan is starting to grow facial hair, his voice is deepening, and he's showing other signs of puberty. Which stage of development is he likely

in?

OA.

middle childhood

OB. late childhood

Ос.

adolescence

OD. young adult

PLEASE HELP ME ASAPPPPPPPPPPPPPP!!!!!!!!! No links !!!!

The oxygen and carbon dioxide exchange that occurs during photosynthesis and respiration help to

Urgent!!
Which of the following is a major goal of fisheries managers?

A.Using resources intelligently so they will be preserved.

B.Increasing fish production as much as possible.

C.Reducing public consumption of fish to protect fish populations.

D.Preserving natural resources in a pristine and unused state.