the half life of carbon-14 is 5730 years. a corpse is pulled from a bog and tested for C-14 beta radiation. the amount of radiation is 75% of the normal amount coming from living things. how long has the corpse been in the bog?

Answers

Answer 1

Answer:

%67

Explanation:


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8.33 pts
Question 2
You are at the zoo and watching a lion chew on some meat. You begin to taunt the lion since he is behind the glass and cannot get to you. He
charges the glass and breaks through. Your adrenaline kicks in and you take off running. What system is repressed during your escape?

Answers

Answer:

The parasympathetic nervous system is repressed during your escape.

Explanation:        

In the exposed example, during your escape from the lion, the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) system are responsible for your body response. They send signals and release adrenaline and noradrenaline to increase your heart biting frequency, and blood pressure, stimulating your respiration and dilating your respiratory tracts.

Once you manage to escape from the lion, and the threat factor is over, the body gets back to normality. At this point, the parasympathetic nervous system is activated. Your body activities become normal again. Your arterial pressure, respiratory frequency,  and cardiac frequency get reduced to their normal conditions. You are relaxed and at rest.

When the parasympathetic system is activated, the sympathetic nervous system is not, as they perform in opposite ways.

HELP i’ll brainLIST U
why are water quality standards important?

a. they help protect clean water and improve the quality of polluted water

b. industries would not self regulate and the standards force them to treat unsafe water

c. The standards guarantee that every home in the nation has safe drinking water

d. there is a limit amount of clean water in the world and like oil once it used up it’s gone

Answers

I did research on it and I choose ( a.)

Define ecological succession.

Answers

Answer:

the process by which the structure of a biological community evolves over time

Explanation:

Answer:

the process by which the structure of a biological community evolves over time. Two different types of succession—primary and secondary—have been distinguished.

Explanation:

please help asap i will mark brainliest

Answers

Answer:

I would say the 3rd one because itakes the most sence

Answer:c because the compound has formed through 2 gases that made up a liquid the oxygen has bigger in size and is more abundant in mass while hydrogen is smaller but more abundant in numbers

Explanation:

PLEASE HELP!!! WILL GIVE BRAINIEST!!!!

Answers

Answer:

Name......? By having the letters that abbreviate them and by the way they are pictured.

Explanation:

I had this question and I put this answer and my teacher counted it 100% correct

A change in body temperature will have which of the following effects on enzymes in the body?

A. A temporary change in the ability of some enzymes to bind with their coenzymes

B. A temporary change in the ability of some enzymes to bind with their substrate

C. A temporary reduction in the concentration of some enzymes in the body

D. A temporary increase in the concentration of some enzymes in the body

Pls help. I think it’s either C or D idk and the question is worth a lot of points :(

Answers

Answer:

The answer is B :)

Explanation:

A temporary change in the ability of some enzymes to bind with their substrate. The correct option is B.

Thus, Animals can be categorized into two groups: those that keep a steady body temperature despite varying environmental temperatures and those that have a body temperature that fluctuates with the environment.

Ectotherms are animals that do not regulate their body temperature but instead depend on outside energy to accomplish it.

The name "cold-blooded" has been applied to this category, but it might not be appropriate for an animal living in the desert with a fairly warm body temperature. Animals known as endotherms can experience temperature extremes but rely on internal sources to maintain their body temperature.

Thus, A temporary change in the ability of some enzymes to bind with their substrate. The correct option is B.

Learn more about Enzyme, refer to the link:

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Water has a neutral ph. if water was acidic or alkaline what abundance of ions are present in an acidic substance and what ions are present in an alkaline substance?

Answers

Answer:

Calcium and magnesium

Explanation:

Answer:

Calcium and magnesium

Explanation:

 

Life: Scientists have found signatures of life in
rocks from 3.5 billion years ago. That means life
existed in a world with very low oxygen! What
is the evidence?

Answers

Answer:The evidence to this is because oxygen, is produced by bacteria at that time! If they do That why would they need to use any oxygen? If i didn't get the answer you were asking then well sorry :/

What is the scientific name for the walrus? Chordata Mammalia Mammalla Chordata O rosmarus Phoca O Phoca rosmarus O none of the above
help pleaseeeeeeee​

Answers

Answer:

None of the above

Explanation:

The scientific name of the walrus is Odobenus rosmarus.

Odobenus  is the genus name. Rosmarus is the species name.

They are in the phylum chordata , class mammalia , order carnivora, and family odobenidae. However, these are not included in the scientific name.

Therefore, none of the answer options are correct

Where do tidal bulges form during the New and Full moons?

Answers

Answer:

hope it helps..

Explanation:

High and low tides are caused by the Moon. The Moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the Moon and the side farthest from the Moon. These bulges of water are high tides.

What are viroids?
short strands of circular RNA
short strands of circular DNA
long strands of DNA coiled into circles
small circles of proteins

Answers

The answer is "short strands of circular RNA"

Why is technology important when developing scientific theories?

Why is oceanic crust younger than continental crust?

Answers

Answer:What is the best explanation for why oceanic crust is subducted by continental crust?

The continental crust is also less dense than oceanic crust, although it is considerably thicker. As a consequence of the density difference, when active margins of continental crust meet oceanic crust in subduction zones, the oceanic crust is typically subducted back into the mantle.

Explanation:Why oceanic crust is younger than Continental?

Through mantle convection, the rich minerals of the mantle may be ultimately “recycled” as they surface as crust-making lava at mid-ocean ridges and volcanoes. Largely due to subduction, oceanic crust is much, much younger than continental crustWhy is the theory of plate tectonics so important to geologists?

Plate tectonics, theory dealing with the dynamics of Earth's outer shell—the lithosphere—that revolutionized Earth sciences by providing a uniform context for understanding mountain-building processes, volcanoes, and earthquakes as well as the evolution of Earth's surface and reconstructing its past continents and .

I need help please with this question ?????!!!

Answers

Answer:

9km per hour

Explanation

Speed=distance/time.

. =45/5

=9km per hour

what the guy said above, its correct.

Which feature of Earth is part of the hydrosphere?

air
fish
glaciers
rocks

Answers

Answer:

Glacier

Explanation:

It is a form of water.

Answer:

Glaciers

Explanation:

They're found in polar areas in/near water

ILL GIVE BRAINLIEST AND EXTRA POINTS- Who FIRST recognized the cell as the universal unit of life? HINT ITS NOT HOOKE I GOT IT WRONG
1. Virchow

2. Van Leeuwenhoek

3. Schleiden and Schwann

ASAP PLEASEEEEE

Answers

Answer:

2. Van Leeuwenhoek

Explanation:

Hooke did discover it, but the cells were dead already. So it's Van Leeuwenhoek.

Why did life first occur in the oceans and not on Earth’s surface?

Answers

Answer:

I think because many more bacteria and cells and etc were first like created in the water, they they developed and made bigger and bigger living organisms

Answer:

Because God decided that he was gonna make animals first and he started with the ocean and then land and sky. He then made Adam to take care of all of the animals. But saw that he was lonely and made Eve with one of his ribs. He then put them in the garden of Eden with a tree that was forbidden to eat from. The tree of knowledge of the good and evil. One day eve was walking by the tree when a serpant asked her why they didn't eat from it. She replied by saying that God asked them to not eat from that tree. The serpant told Eve that God just doesn't want them to be knowledgeable like him. She took a bite of the apple and then gave some to Adam. They then realized that they were naked and made clothing from animal skin. This was what created sin. They tried to hide from God but he already knew and he banished them from the garden with angels and a fire sword at the enterance. He went to the serpant and cursed him for telling Eve to eat from the tree. Adam and Eve went on their way and had 2 boys. Cane and Abel.

Explanation:


HELP I HAVE LIKE 5 MINS LEFT

Answers

Answer:

B

Explanation:

evaporation and precipitation are the parts of the water cycle, the others are not

All eukaryotic cells contain at least one Golgi complex, typically located in the cytoplasm and near the endoplasmic reticulum.
Which of the following best describes a process that occurs within the Golgi complex?

Answers

Answer: Enzymatic modification of newly synthesized integral membrane proteins

Explanation: got it right for AP Bio.

The correct answer that describes the process that occurs within the Golgi complex is the enzymatic modification of newly synthesized integral membrane proteins.

Once protein is synthesized, they undergo folding and repackaging within the endoplasmic reticulum before they are transported to the Golgi apparatus/complex.

Within the Golgi complex, the protein is modified enzymatically and encased in vesicles. It is then transported to the cell membrane where they are utilized as integral protein.

So, basically, the statement that best describes the process that occurs within the Golgi complex is the enzymatic modification of newly synthesized integral membrane proteins.

More about the Golgi complex can be found here: https://brainly.com/question/13274076

Please Help ill mark brainlest

Answers

Answer:the one u have already picked is the answer a monomer is a molecule that can bind together to form something called a polymer which is a group of monomers.

Explanation:

lolololololololololol

Answers

Answer:

How do I answer this.

Explanation:

Lololololo what’s the question

Nitrogen cycle high school

Answers

The process of converting nitrogen gas to ammonium is called nitrogen fixation. Decomposition of plants and animals also releases ammonium into the ground. This ammonium can be further converted to nitrate with the help of nitrifying bacteria. Returning nitrogen back to the atmosphere is called denitrification.

what happens after we die?

Answers

Answer: Our bodies stay fresh for a short period time, then enter rigor mortis, then began the slow process of decomposition.

Explanation:

Describe at least 3 areas of carbon storage in the carbon cycle and how the carbon moves between these sinks

Answers

The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.

Which of these is a harmful interaction? (4 points) Competition Mutualism Commensalism Symbiosis

Answers

Answer:

Commensalism Symbiosis

Explanation:

Answer:

Symbiosis

Explanation:

Which statement is an example of a scientific theory?

A.
All living organisms are composed of one or more cells, which came from pre-existing cells.
B.
Hummingbirds do not like the color white because they visit other colored flowers more often.
C.
The Earth is the third planet from the Sun and has one moon, which orbits the Earth.
D.
The amount that caffeine affects a person's heart rate differs based on the person's age.

Answers

Answer:

d

Explanation:

a theory is similar to a hypothesis except has backed up evidence already

Answer:

A

Explanation:

A is always true while the others are sometimes true, C is true in our galaxy, but not others. B is opinionated, different humming birds may like different colors. D is not considering other variables that could effect that situation, such as weight, height, blood pressure, etc. Therefore, A is correct.

24. List some examples of cell specialization?

Answers

Answer:

trae blood cells

Muscle cells

What are 2 characteristics of primary succession, secondary succession. What are 2 Characteristics they share in common?

Answers

Answer:  Two different types of succession, primary and secondary, have been distinguished. Primary succession occurs in essentially lifeless areas—regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. Secondary succession occurs…

Explanation:

Which is denser, 50 mL of water or 500 mL of water?

Answers

Answer:

50mL

Explanation:

Density is inversely proportional to volume.

This implies that, for the same mass of water, the higher the volume, the less dense it is.

By comparison 500ml is greater than 50ml

Going by the above analysis, 50ml will be less dense than 500ml because it is smaller.

Which sphere in the Earth system is also part of the hydrosphere? O A. Atmosphere O B. Biosphere O C. Geosphere D. Cryosphere​

Answers

A. atmosphere

explanation: there is water vapor in the atmosphere that is considered to be part of the hydrosphere.

In an ecosystem, atmosphere is a sphere in  the Earth system  which is also part of the hydrosphere.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

https://brainly.com/question/1673533

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What structural components do all the viruses have in common

Answers

Answer:

they are bacteria

Explanation:

They all are Prokaryotes
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