Answer:
A = 4000 years
Explanation:
Given data:
Half life = 2000 years
Total mass = 100 g
Mass remain = 25 g
Time taken to reduces to 25 g = ?
Solution:
At time zero = 100 g
At first half life = 100 g/2 = 50 g
At 2nd half life = 50 g / 2 = 25 g
Time taken:
Half life = Time elapsed / number of half lives
2000 years = Time elapsed / 2
Time elapsed = 2000 years × 2
Time elapsed = 4000 years
Which of the following terms means "a group of connected or related objects
or materials"?
A. Biology
B. Matter
C. Structure
D. System
Answer: system
Explanation:
searching a bunch of stuff, research pages say system
1. Which of the following would not be considered part of a niche?
O where the organism lives
O the prey of the organism
when an organism dies
O how far an organism travels to eat
Answer:
How far the orginisme travels to eat.
Explanation:
what are force diagrams ?
Answer:
It is isolated from its surroundings showing all the forces acting on it In physics and engineering
Explanation:
A whale is a mammal and a shark is a fish, but they have similar body plans. This is an example of _______.
Which factor determines who a society will produce goods and services for?
A.
the economic system in the society
B.
the available resources in the society
C.
the population of the society
D.
the external sector of the society
Answer:
the economic system in the society
A chromosome is what?
A. A type of cell membrane
B. Carbohydrate inside the nucleus
C. Lipids surrounding the nucleus
D. Tightly wound up dna
Which product is the result of light reactions in photosynthesis? O A. Water B. Glucose O c. Carbon dioxide OD. Oxygen
Answer:
D. Oxygen
Explanation:
Plants absorb carbon dioxide (CO2) and release oxygen for humans and animals to breathe in. Afterward, they'll release CO2 for plants to absorb, which forms a cycle.
Answer:
Oxygen
Explanation:
Both light dependent and light independent reactions in photosynthesis create glucose. But, only light dependent reactions convert carbon dioxide to oxygen.
Light independent: Carbon dioxide + water --> ATP and NADP(Energy/Glucose) and water
Light dependent: Carbon dioxide + water + light --> Glucose(ATP and NADP), water, and oxygen
(GIVING BRAINLIEST)
How is sleet different from hail?
A) Hail falls to the ground as liquid water, and sleet is solid.
B) Hail falls with rain and snow, and sleet only falls with snow.
C) Sleet can happen during thunderstorms, and hail cannot.
D) Sleet pellets are smaller than hail.
Answer:
The answer is C) Sleet can happen during thunderstorms, and hail cannot. or D) Sleet pellets are smaller than hail.
Explanation:
Answer:
D
Explanation:
Please help !
Really important !
Answer:
Explanation:
uhh i think c for 1 and c for 2 a for 3
If you could erase one invention from existence, what would it be and why?
Answer: sports lol
evidence :
Answer:
I would erase cigarettes from existence, so people can quit damaging their mind and their lungs.
Explanation:
HELPPP!!!
1) which of the following do you think is most required for seed germination?
Answer:
all of the above
Explanation:
We use genetically modifed animals for protein tracking as well as novelty pets.
True
False
A punnet square shows you all the ways in which____can combine.
A. alleles B.eggs
C. sperm. D. colors
Answer:
The answer is A. alleles
Analogy of Cell wall
Answer:
In school, I was taught that it is like a bouncer who controls who enters and exits the club because the cell membrane controls what is able to permeate into the cell. It’s good, but I like to think of it as a door.
Using the ecosystem model above, develop a constructed
response of whether energy can flow from each example listed
below. If energy does transfer, give an example
• animal to animal
•plant to animal
• animal to plant
•plant to plant
Answer:
Energy transfer in ecosystem follows the 10 % law.
Explanation:
In an ecosystem model, the transfer of energy starts with the base level that is from the grass level to the grasshopper that is the primary consumer. This is a plant to animal. The energy transferred from grasshopper to snake is an example of the animal to animal. The dead and decaying animal may transfer this energy back to the plant through the soil.According to the kinetic theory, all matter is composed of
plasma
particles
solid material
waves
Answer:
Explanation:
According to the kinetic theory, all matter is composed of Particles
PLZ HELP WILL GIVE 100 POINTS AND BRAINLIEST In comic strip form, draw the stages of binary fission asexual reproduction. You should have at least three drawings in the strip. Be sure to include and label the nuclei, cell walls, cytoplasm, and daughter cells.
When your drawings are complete, add any additions to make them like a comic strip you find in a newspaper. You can include dialogue between the cells or headlines for each picture. You can make your strips funny, dramatic, scary, or any other appropriate style you want.
Binary fission is a type of asexual reproduction observed in bacteria, in which one cell divides into two daughter cells.
What is binary fission?During binary fission, there is no involvement of two parents and also there is no gamete formation occurring, so it is categorized into asexual reproduction.
There are several steps during binary fission, firstly bacteria replicates its DNA, secondly, it grows and increases the number of a cell organelle, now it segregates DNA into two parts, at the end splitting this large cell.
In DNA replication bacteria uncoils its chromosome and copy this genetic information to transfer it to subsequent generations.
Therefore, replication, cell growth, segregation, and splitting of the cell are stages of binary fission.
Learn more about binary fission, here:
https://brainly.com/question/10584598
#SPJ2
Based on the food chain, identify the primary consumer.
A)
frog
B)
grass
sunlight
D)
grasshopper
Answer:
grasshopper
Explanation:
Because primary consumers are heterotrophs that feed on producers
The
was a series of acts, mostly in the 1960s, to increase agricultural yields.
A) synergistic effect
B) integrated pest management
C) conservation tillage system
D) green revolution
E) genetic modification of crops
Answer:
E
Explanation:
in 1960 if agricultural yields increase it is modified into genetic of crops
Answer:
Green revolution?
Explanation:
This increased agricultural production worldwide. I’m taking the test right now!
22222222 .
dsssssdsxsdwe23343evc vczc
Answer:
Explanation:
wow
Answer:
hi
Explanation:
Let’s say you breed a purple flower and a white flower.
What color(s) do you think the offspring will be? Why?
Answer:
Purple because its a dominant trait
Explanation:
Answer:
light purple or purple like the purple flower
Explanation:
the type of land tenure system in which a farmer pays rent is called........
Answer: can u be a little more clear with ur question ?
Explanation:
Métayage, Italian mezzadria, type of land tenure whereby the cultivator
Why do human populations change?
Answer:
Because either humans are passing away quickly or there are a lot of child births (Maybe even both)
Explanation:
Answer:it depends on death rates which depends on population
Explanation:
what events associated with earthquakes do cause the greatest loss of life and property
Answer:
tsunami
Explanation:
Earthquakes cause tsunamis.
why you consider it is important to quantify matter. Please provide 3 examples
of materials you may quantify
Answer:
Utilizing the proper measurements—and checking and rechecking them before acting—can benefit us in so many areas of our lives. ... All of these things will help you maximize another key measurement: your gas mileage! As you can see, measurements matter in all areas of life
What is the label F?
A. Centromere
B. Chromosome
C. Centrioles
D. Metaphase Plate
Answer:
c
Explanation:
No question, just answers
What is the difference between a detritivore and a decomposer?
While detritivores feed on dead organic matter, decomposers actually break down dead or decaying organisms.
What is the main difference between food chains and food webs?
Food webs are more complex than simple food chains.
Taj incorrectly states that autotrophs are also known as consumers that need to feed on other organisms, including plants and animals, to gain energy. Which of the following best describes consumers that feed on other organisms such as plants and animals for energy?
heterotrophs
Which of the following is the first trophic level in every ecosystem?
autotroph
What is the relationship between matter and energy in an ecosystem?
Matter and energy are cycled through the ecosystem.
Biologists have been able to keep isolated chloroplasts or
mitochondria for a few hours or days. can these structures be
considered alive?
Answer:
Isolated chloroplasts or mitochondria cannot be considered alive, because although they can survive while isolated for a few hours or days and they resemble that of an independent cell (which are alive), they don't metabolise energy, and they don't have cells.
Forms when a river deposits sediments at the bottom of the mountain.
A. Delta
B. Sand Dune
C. Alluvial Fan
D. Cave
Hello!
Your answer: Delta
Have a Great day!
If you were asked to determine if a cell is a prokaryote or eukaryote, the presence of which characteristic would be the best indicator? point
Answer:
Nucleus
Explanation:
Prokaryotic and Eukaryotic cells are very different from each other and can be distinguished by various characteristic.
But the best indicator that determine whether a cell is a is a prokaryote or eukaryote is the presence of nucleus. Prokaryotic cell do not contain nucleus and their DNA is found in cytoplasm while Eukaryotic cell contains membrane bound nucleus and their DNA is found in nucleus.
Hence, the presence of nucleus would be the best indicator.