left atrium
Oxygen-rich blood flows from the lungs back into the left atrium (LA), or the left upper chamber of the heart, through four pulmonary veins. Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber.
How does this support the theory that whales evolved from walking mammals? in embryo evidence
Answer:
A embryo's, Whales have small back limbs which disappear before birth.
Explanation:
There are lots of evidence in a whale's body and biology suggesting its ancestors lived on land. They have paddle-shaped flippers that encase hand bones with five 'fingers,' and they breathe air and feed their young with their own milk.
Part H In parts E, F, and G, which data sets (corrective lenses, glasses, or contacts) show the most similar variation between Doctors?
Answer: Doctor A Corrective Lenses: 745, 726, 769, 765, 756, 742, 757, 748, 770,
Explanation: I took the test! i have a great day :)
Please help!!
What do scientists do when they want to name a new organism?
all of the above
They see how the organism is similar to other organisms.
They see if the organism has the characteristics of an animal or plant.
They look at what makes the organism unique.
Answer:
All of the above
Explanation:
I believe all three are true. They see how the organism is similar to other organisms. They see if the organism has the characteristics of an animal or plant. They look at what makes the organism unique.
Why does the Earth experience two high and two low tides each day?
The moon orbits the Earth twice as fast as the sun.
The moon orbits the Earth completely once per day.
The moon and the sun create their own high and low tides.
The moon passes over the same location above the Earth's surface twice per day.
What causes water pollution?
Answer:
Good answer below, just adding on
Explanation:
Runoff of chemical products, animal waste, and especially human waste products such as different types of trash like scrap metals and plastic greatly increase water pollution. Additionally, oil leaks and spills can also lead to severe water pollution. As a general statement I'd say that human activities that are not monitored and are either directly dumped into water ways or are caught in run off cause water pollution.
The brain, spinal cord, and nerves are all major organs of the ___ system.
Answer:
nervous system
Explanation:
nervous system
nervous systemsystemsystem
when salt dissolves into water does it change its state
Answer:
no it doesn't change back
fine here When you dissolve salt in water, the sodium chloride dissociates in Na + ions and Cl - ions, which may be written as a chemical equation : NaCl (s) → Na + (aq) + Cl - (aq) Therefore, dissolving salt in water is a chemical change. The reactant (sodium chloride, or NaCl) is different from the products (sodium cation and chlorine anion).
How is a mixture such as a plate of pasta different from a mixture such as air
Answer:
Well there is a lot of differences between the two. Its called homogeneous and Heterogeneous mixtures. Homogeneous mixtures are all the substances are evenly distributed throughout the mixture (salt water, air, blood). Heterogeneous mixtures are the substances that are not evenly distributed (chocolate chip cookies, pizza, rocks). So Pasta with sauce and meatballs is heterogeneous and air is homogeneous
HOPE THIS HELPS HAVE A GREAT DAY!!~
Explanation:
Part A Cut off the top and one side of the milk carton as shown. Use the hole punch (or scissors) to make two holes on opposite sides of the carton. Make sure the holes are low enough for the rubber band to launch the car. Thread the rubber band through the holes, and secure it using paper clips. Stretch the rubber band to launch the toy car away from the box. Pull back the rubber band to different distances, and explain what happens.
Answer:
the harder you pull on the rubber band the further the toy launches.
Explanation:
because i got it right and its common sense
What is a sedimentary rock?
A. a type of rock that is formed over long periods of time by layers of silt building up on the floor of a body of water
B. a type of rock formed over long periods of time by the cooling and solidification of molten Earth material
C. a type of rock that is formed in a very short period of time by sudden violent volcanic eruptions into the ocean
D. a type of rock that is formed over long periods of time by the transformation of existing rock types
Answer:
answer is D
Explanation:
sedimentation is the process to make the sedimentary rock. they are formed by using minerals or fossils or other rock types
A foil boat measures 4.0cm by 5.0cm and has a mass of 100.0g. If you put the boat in water, how far will it sink? (Recall the density of water is 1.0 g/mL) (answer with a number; units are cm)
Answer:
Let the volume of the block of wood be
V
c
m
3
and its density be
d
w
g
c
m
−
3
So the weight of the block
=
V
d
w
g
dyne, where g is the acceleration due to gravity
=
980
c
m
s
−
2
The block floats in liquid of density
0.8
g
c
m
−
3
with
1
4
t
h
of its volume submerged.So the upward buoyant force acting on the block is the weight of displaced liquid
=
1
4
V
×
0.8
×
g
dyne.
Hence by cindition of floatation
V
×
d
w
×
g
=
1
4
×
V
×
0.8
×
g
⇒
d
w
=
0.2
g
c
m
-3
,
Now let the density of oil be
d
o
g
c
m
-3
The block floats in oil with 60% of its volume submerged.So the buoyant force balancing the weight of the block is the weight of displaced oil =
60
%
×
V
×
d
o
×
g
dyne
Now applying the condition of floatation we get
60
%
×
V
×
d
o
×
g
=
V
×
d
w
×
g
⇒
60
100
×
V
×
d
o
×
g
=
V
×
0.2
×
g
⇒
d
o
=
0.2
×
10
6
=
1
3
=
0.33
g
c
m
−
3
Explanation:
Explain the water cycle in your own words. make sure u tell the steps in order
Answer:
Collection - Evaporation - Condensation - Precipitation
Explanation:
The Water cycle is a series of continuous events that cause rain
the figure shows the great ocean conveyor belt. which best describes what this model represents?
A. The model shows how ocean currents change the salinity of water.
B. the model shows how ocean currents move heat energy around earth
C. the model shows how salinity of water affects its density
D. the model shows how the density of water differs between the north Atlantic and other parts of the ocean.
Answer:
d
Explanation:
The ocean conveyor belt shows the movement of the oceanic water and the salinity. The model represents the density of the water in different regions of the world. Thus, option d is correct.
What are ocean conveyor belts?Ocean conveyor belts are the oceanic current movement in their oceans across others and how the water moves across the water bodies across the globe.
The model shows that high salinity water gets heavy and sinks in the ocean of North Atlantic but the water of the Indian and the pacific oceans are less saline and remains at the surface.
Therefore, option D. the water differs in oceans based on density.
Learn more about ocean conveyor belts here:
https://brainly.com/question/3401456
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Which two substances are among the four major types of organic compounds made by living things?
A. Phosphates
B. Nitrates
C. Proteins
D. Lipids
Answer:
Lupids
Explanation:
D:)
Which of these shows the common stages of growth for a flowering plant?
leaves, seed, shoot, root system, stem or trunk, flowers
stem or trunk, root system, seed, shoot, leaves, flowers
seed, shoot, root system, stem or trunk, leaves, flowers
flower, seed, shoot, stem or trunk, root system, leaves
Answer:
c
Explanation:
How do the data support your claim above?
Explain your statement above. Be sure to refer to specific pieces of data from your experiment that support your argument.
Answer:
i need more information give me more pictures
Explanation:
lol
Answer:
the data will support my theory if the results are right for my hypothisis
Explanation:
Think of at least 10 things you can do to help preserve our freshwater or to clean up our polluted water
Answer:
#1 Clean up trash so, they don't get into sewers.
#2 Don't use up water.
#3 Do small loads of laundry
#4 Keep shower time minimal
#5 Pay your taxes to the government can fix pipe lines or fix lead-made pipes
( Five ideas, that's all i can think of)
Explanation:
Choose all that apply for Grasslands
Select 3 correct answer(s)
Question 2 options:
Contains grasses and woody plants
occur in all climatic zones
rainfall is low
no trees and shrubs
Answer:
no tree shrubs rainfall is low contains grasses and woody plants correct me if I'm wrong
Answer:
B. occur in all climatic zones
C. rainfall is low
D. no trees and shrubs
Explanation:
Which statement best defines the term inherited trait?
A. behaviors passed down from parents
B. physical qualities passed down from parents
C. physical qualities parents teach children to have
D. physical qualities and some behaviors passed down from parents
Answer:
d
Explanation:
some physical qualities from our parents, it's a good chance we will inherit some of their qualities.
Which statement best describes the relationship between the sun and moon during a spring tide?
The sun and the moon are aligned.
The sun and the moon are revolving around the Earth at the same speed.
The sun and the moon are at 45° angles to each other.
The sun and the moon are at 90° angles to each other.
Answer:
i think c
Explanation:
Explain why a food web is a better illustration of an ecosystem]= than a food chain
Answer:
The food web provides a better model of an ecosystem because the food web is a model between MANY different consumers and producers in an ecosystem. … The food chain would break down and if the food chain breaks down all the animals would die, and the ecosystem will no longer exist.
Explanation:
what are some consequences of water pollution?
Answer:
At the bottom
Explanation:
-Destruction of aquatic flora and fauna
-Economic downturns
-serious health problems
And more!! We need to beware of our actions
HELP PLEASE AND QUICK!!!!!!!!!!!!!!!!!!!
Make a prediction for what science and technology may uncover in the next few decades.
My prediction for what science and technology may occur in the next few decades is the increase of groundwater increasing, with many drought occurrences to the environment. For technology, I suppose that there may be some new inventions for both political and environmental usage to increase the intensification of agriculture in order for us to have crops to eat. Furthermore, I predict that our significant key issues are resolved as time goes on, such as global warming, inflation, ocean acidification, etc.
A soft lump of clay has water run on top of it. Most of the water and clay runs off the table. After a long while, the water is turned off and allowed to dry. There is no clay left; instead, there are small pebbles and other types of components left on the table.
Which natural process is this modeling?
A. physical weathering
B. deposition
C. erosion
D. chemical weathering
i need help w this..
A pneumonic device is a memorization tool that helps you remember things. For example, if you can read music you probably have heard, “Every Good Boy Does Fine” to learn the names of the lines on the treble clef EGBDF. Or maybe your math teacher taught you, “Please Excuse My Dear Aunt Sally,” to help you remember the order of operations. It is now your turn to think of a pneumonic device to remember the water cycle in order. Write your pneumonic device below.
help with science question
Answer:
(4) Inner core. (5) magma. (6) crust (7) Convection current. (8) energy waves
Explanation:
To calculate acceleration you must
Select one:
multiply the force and mass
add the force and mass
divide the mass by the force
divide the force by the mass
As the of the force of the shot increased, ___ ?
the puck traveled ?
This is because a force leads to a bigger change in an object's motion ___ ?
Friction had the effect on the puck's movement ?
as the friction force increased, the puck traveled ?
This is because friction works in the direction as an object is moving ?
What happens to an object if the total of the forces acting on it are greater than zero?
Select one:
Nothing will happen to the object.
The object’s motion will change.
The object will move forward.
The object’s motion will remain the same.
Can someone help with this?
--
I don't understand what to do for this part
Answer:
You would turn the decimals into a percent, then you would subtract that number from 100. Put that into decimal form.
For example, aluminum’s percent error would %10
Explanation: