Answer:Fossils that are abundant in earlier rock layers are simply not present in later rock layers. A wide range of animals and plants suddenly died out, from tiny marine organisms to large dinosaurs.
Species go extinct all the time. Scientists estimate that at least 99.9 percent of all species of plants and animals that ever lived are now extinct. So the demise of dinosaurs like T. rex and Triceratops some 65 million years ago wouldn't be especially noteworthy—except for the fact that around 50 percent of all plants and animals alive at the same time also died out in what scientists call a mass extinction.
Explanation:
Which is most likely a chemical property?
A) Oxidation state: the charge an atom has if it was bonded ionically to other atoms Different oxidation states indicate different abilities to bond with other atoms.
B) Melting point: the temperature at which a solid turns into a liquid. Different substances have different melting points.
C) Density: the amount of a substance that fits in a certain volume. Different states of matter of the same substance can have different densities.
D) Conductivity: the ability to transfer electrical charges. Conductivity is different in different substances.
Answer:The oxidation state
Explanation:
Read the following sentence:
"When you look at a basketball, what are you seeing?"
Why might the author have started the passage with this question?
a
to give the reader an object to visualize before examining the role of light
b
because the main idea of the passage is about basketball
c
because the author wants to use the example of basketball to explain electromagnetic radiation
d
to show how important the color orange is to electromagnetic waves
Answer:
Explanation: B because its talking about basketball
Answer:
I'm pretty sure A would be the answer
How can I describe the yearly temperatures of the Tundra biome?
Answer:
well..The arctic tundra has average winter temperatures of -34° C (-30° F) and average summer temperatures of 3° to 12° C (37°to 54° F).
Explanation:
hope this helps :) brainelsit?
How does kidney failure prevent the excretory system from operating?
The bladder stops working.
Blood is not properly filtered, leaving waste in the blood.
It does not affect the excretory system.
The intestines stop working.
Answer: B. The blood is not properly filtered, leaving waste in the blood
Explanation: took the test
Who were carriers for of hemophilia in the royal family?
Describe what happened with Mendel crossed purebred tall pea plants with purebred short pea plants.
Answer:
He found that the recessive trait such as the short plants disappeared, and only the dominants trait stayed, tallness, but when he allowed them to self pollinate, the recessive gene, shortness reappeared.
Explanation:
Science question that I REALLY need help with:
HELPPPP ASAP!!!!! These are the last onesss
PLSSSSSSSSSS Which best explains why a person can tell the difference between a whisper and a yell?
Sound waves turn into chemical signals that indicate certain sounds.
Different vibrations in the ear cause the brain to interpret different sounds.
The fluid in the cochlea picks up electrical signals for the intensity of sound.
The eyes see what is making the noise and help the brain process the sound.
Answer:
The difference is the louder the sound the bigger the waves and your ears collect the sound waves and brings it to you brain
Explanation:
Only answer if you have an answer to the question. Thank you.
Answer:
A familiar example of homeostatic regulation in a mechanical system is the action of a thermostat, a machine that regulates room temperature.
Explanation:
Answer:
Humans' internal body temperature is a great example of homeostasis. When someone is healthy, their body maintains a temperature close to 98.6 degrees Fahrenheit (37 degrees Celsius). Being warm-blooded creatures, humans can increase or decrease temperature internally to keep it at a desirable level.
Explanation:
HELPPPPPPP!! To maintain homeostasis, the human body has many systems that remove wastes from the body. Which correctly explains how two organ systems interact to eliminate wastes?
A.
The muscular system helps the bladder to release urine from the excretory system to maintain homeostasis.
B.
The muscular system helps push carbon dioxide wastes from the respiratory system to maintain homeostasis.
C.
The muscular system helps squeeze solid wastes from the digestive system to maintain homeostasis.
D.
All of the answer choices correctly explain how two organ systems interact to eliminate wastes to maintain homeostasis.
Answer:
d
Explanation:
Choose the correct level of organization (smallest to largest) in the skeletal system. *
6 points
Osteocyte → Compact Bone Tissue → Femur →Skeletal System
Compact Bone Tissue → Osteocyte → Femur →Skeletal System
Compact Bone Tissue → Skeletal System → Osteocyte → Femur
Osteocyte →Compact Bone Tissue → Skeletal System→ Femur
I believe it is Osteocyte - Compact Bone Tissue - Femur - Skeletal System
What is the passage mainly about?
a
different tools humans have invented to harness information
b
gamma rays and x-rays
c
electromagnetic waves and how humans utilize them
d
why waves have different wavelengths
Answer:
What is the passage?
Explanation:
How do you use gene version in a sentence?
Answer:
That is quite a gene pool you two have
Explanation:
Answer:
You have your father's genes.
I couldn't think of anything else lol
ILL GIVE BRAINLIEST!!
Hello! Could someone please help me? Thank you!
Answer:
A
Explanation:
You can see that air pollution increases sharply between those two days.
Answer:
a. between days 3 and 4
Explanation:
that was you big increase
i’m just a little confused can someone explain ?
Basically, there is a presentation of types of food and the amount of those foods over 50 years in this graph. This means the graph is showing amounts of certain foods over the time period. I'm guessing that basing off of the the previous text you're just noting a change in the breaks of birds based off of the diet available to them at certain times. The adaptations and natural selection will explain the changes because due to certain limited and available foods the diet of the birds change.
Only answer if you have an answer to one of the questions. Thank you.
A part of the periodic table is shown.
Which of the following elements is less reactive than the others? Beryllium (Be) Calcium (Ca) Lithium (Li) Magnesium (Mg)
Answer:
Beryllium (Be)
Explanation:
Remember periodic trends...
Period: reactivity decreases as you go from left to right
Group: reactivity increases as you go down the group
Proxima Centauri and the Sun are both main sequence stars, but Proxima Centauri is a red dwarf and the Sun is a yellow dwarf. Based on the information you charted, compare the characteristics of red dwarf stars and yellow dwarf stars.
Answer:
Red dwarfs are low-mass main-sequence stars. Yellow dwarfs are main-sequence (dwarf) stars with masses comparable to that of the Sun.
Identify the fluxes by which water leaves organisms of the biosphere and moves to other spheres.
condensation
evaporation
precipitation
transpiration
urination
Answer these two questions
You overheard a classmate in the hallway say the following statement.
???: it gets warmer when you move up the atmosphere because you are getting closer to the sun.”
Do you agree or disagree with him.
If possible could you explain why you agree or disagree it could help me a lot because I’m kinda confused.
Some elements have properties of metals and nonmetals, which make them useful in electronic devices. Where can these elements be found?
a
section B
b
section D
c
section C
d
section A
What are the names of the two subatomic particles located at y?
a
neutrons and electrons
b
protons and neutrinos
c
neutrons and protons
d
protons and electrons
Plz help will give 20points
Please help will give brainliest if answer is backed up with two sentences!
Answer:
Oxygen molecules from the air he breathe pass through his respiratory system and sent to his cells through a circulatory system. The digestive system of Ezra breaks the starch in the bread and protein in the cheese into necessary glucose and amino acids.
The chemical reaction takes place between glucose and oxygen to generate energy by Ezra's cells. The energy generated by the cell is released, so that Ezra have enough energy to play basketball.
Explanation:
can someone explain i’m a bit confused??
Answer:
It basically means that, because of the drought certain foods will be unavailiable. the birds will have to start eating other foods and over time evolution will change their beaks so that the can eat the new food easier.
Explanation:
Answer:
Explanation: I agree to Iamthatoneguywastake
What is represented in the diagram?
Answer:
The Heart
Explanation:
This is a picture of your heart.
Which property can be used to identify a pure substance as an element?
А
only one shape
B
only one type of molecule
С
only one type of atom
D
only one color
Answer:
B
Explanation:
BECAUSE IT CARRYS MULTIPLE ATOMS
An organ within an organism accomplishes tasks. To engage in these tasks, an organ typically requires
energy provided by other organisms.
B
interaction with other organ systems.
С
communication with other organisms.
D
segregation from other organ systems.
Answer:
I think that it is the first one :)
Explanation:
Pls pls tell me if im wrong, ill do my best to fix it
B. Interaction with other organ systems.
What is an organ ?An organ within an organism performs specific tasks to maintain the overall health and function of the organism. To accomplish these tasks, an organ typically requires interaction with other organ systems within the organism.
For example, the digestive system works in tandem with the circulatory system to transport nutrients to the cells, while the respiratory system works with the circulatory system to deliver oxygen to the body. By working together, the different organ systems help to maintain the overall health and function of the organism.
Learn more about organ, here:
https://brainly.com/question/12825206
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7th grade science help pls
Answer:
d
Explanation: the genes carry what is needed to change, and the cells change due to what is happening in the genes
Answer:
with what
Explanation:
becuse how am i going to help
In an experiment, equal amounts of heated water and soil were left to cool down. The initial and final temperatures of each were recorded. A partial record of the temperature is shown.
Experimental Record
Substance Initial Temperature Final Temperature
Water 27 °C 24 °C
Soil 27 °C ?
Which statement about the final temperature of soil is correct?
It will be less than 24 °C as soil loses heat relatively faster than water.
It will be less than 24 °C as water loses heat relatively faster than soil.
It will be more than 24 °C as it takes relatively longer to change soil temperature than water temperature.
It will be more than 24 °C as it takes relatively longer to change water temperature than soil temperature.
Answer:
I think it will be less than 24 °C as water loses heat