Why were there no living inhabitants on earth for the first billion years?
There was no life on Earth for the first billion years because the atmosphere was not suitable for life. Earth's first atmosphere had lots of water vapor but had almost no oxygen. Later, frequent volcanic eruptions put several different gases into the air.
Which organisms are tertiary consumers in this food web? Select all that apply.
Answer:
it is only the black cra ppie.
Explanation:
the whirl gig beetle, water cricket are secondary consumers and the copepod is a primary consumer.
(Free Response) Phototropism is a phenomenon observed in plants. Phototropism is best described as a plant’s response to light. Auxin is a hormone and signaling molecule found in plants that promotes cell elongation. It is observed that auxin concentrations are lower in the parts of the plant that are closest to light. Auxin concentrations are higher in the parts of a plant that are in the shade.
Answer the following in the space provided.
A. Describe phototropism using what you know about signal transduction. Start with auxin as a signaling molecule.
B. Explain how altering the receptor would affect the signaling pathway.
C. Predict how a plant would respond to exposure to light on all sides of a growing stem.
D. Provide reasoning and justification for your prediction.
Heat is a measure of _____________ _____________.
A)kinetic energy
B)potential energy
C)thermal energy
Answer:
C)thermal energy
Explanation:
Answer:
thermal energy
Explanation:
Examine the photograph. Identify at least three natural resources being used. Describe where each natural resource came from.
Answer:
Water- from water comes from a variety of sources, including many of the same sources as tap water.
Leather- from rawhide and skins. The most common raw material is cattle hide.
plastic- from cellulose, coal, natural gas, salt and crude oil through a polymerisation or polycondensation process
Explanation:
<3
In 100 words or more, construct and argument supported by empirical evidence to compare and contrast the
characteristics of viruses and organisms.
Help me
Answer:
Organisms and viruses both do not contain a DNA enclosing nucleus; however, these organisms differ greatly in the complexity of their structures. Generally an organism is encompassed within a semi-rigid cell wall made of peptidoglycan, which provides structural support. It is classified as gram positive if its cell wall is thick and stains purple when tested for identification. If its cell wall is thin and stains red, it is referred to as gram negative. Under the cell wall, the organisms also has a plasma membrane made up of a phospholipid bilayer with proteins inserted inside. Within its cytoplasm, ribosomes for protein synthesis and a single
Explanation:
what do we call the number "2" in CO2?
Answer:
CO2 is the chemical formula for the compound carbon dioxide. C is the symbol for the element carbon, and O is the symbol for oxygen and the 2 just means there are 2 elements from the elements table that makes this element up
are a group of cells that work together to perform a specific function.
Answer:
tissue
Explanation:
grp of cells are tissue
Answer:
tissue
Explanation:
i got it right :)
What is the difference between a GMO and cloning
Please help if you know the answer please
Answer:
A GMO Genetically Modified Product though similar to cloning is quite different. Cloning is the process of using egg cells from an individual to produce a new organism. When the baby is born, it is genetically identical to the parent, an exact copy. This process occurs in a lab. Genetic Engineering, which is used to make GMOs, uses technology to alter or change an organism's genes. New genetic information can be added to or removed from an existing set of DNA.
So I would say that some of the differences between GMOs and cloning include that:
Cloning strives to create exact copies of an organism's parent while GMOs remove and add different genes to form desired offsprings like making a product last longer or making the product grow larger faster.
Hopefully, this helped you! Have a nice day :)
True or false The sea otter is considered a keystone species that influences the survival of many other species in an ecosystem .
Answer:
false
Explanation:
answer: True
kind of
These cnidarians have soft, flower-like bodies, and use their stinging cells to catch prey. Some have a symbiotic relationship with the clown fish.
jellyfish
sea anemone
coral
sea fan
(PLEASE HELP!!)
Answer:
sea anemone
Explanation:
Which of the following is the main idea of paragraph 2?
A. Offspring have a combination of traits from their parents
B. Parents have different traits that are passed on to their offspring
C. Genes control the traits particular humans possess
D. Red hair is a trait that is inherited from one’s parents
Paragraph 2:
Genes control everything about us: our hair color, skin color, sex, height, etc. Imagine looking at a picture of two parents and their children. You might see that the mother has certain traits. The father has other traits. Their children usually have a mixture of those traits.
Answer:
ierieieieeoeoeieiririiekkek
Phototropism is a phenomenon observed in plants. Phototropism is best described as a plant’s response to light. Auxin is a hormone and signaling molecule found in plants that promotes cell elongation. It is observed that auxin concentrations are lower in the parts of the plant that are closest to light. Auxin concentrations are higher in the parts of a plant that are in the shade.
Answer the following in the space provided.
A. Describe phototropism using what you know about signal transduction. Start with auxin as a signaling molecule.
B. Explain how altering the receptor would affect the signaling pathway.
C. Predict how a plant would respond to exposure to light on all sides of a growing stem.
D. Provide reasoning and justification for your prediction.
Answer:
i think the answer is c but im kinda not understanding the question
Explanation:
An experiment is set up to investigate gas exchange in aquatic plants.
The hydrogencarbonate indicator solution is orange at the start
Which colour is it after three hours?
A. blue-black
B. orange
C. purple
D. yellow
c because they are you all that you want to be like
All of the following are major glands of the endocrine system expect
Answer:
sweat glands
Explanation:
Sweat glands is exocrine
During MEiosis, the chromosomes are COPIED: *
10 points
Once
Twice
The purpose of meiosis is to shuffle genetic information and cut the cellular chromosome number in half, from 46 chromosomes to 23 chromosomes. ... In humans, the reduction division results in two sperm cells each with 23 chromosomes or an egg cell with 23 chromosomes and one discarded polar body.
2
What are 2 other differences between plant and animal cells besides cell walls?
Answer:
. The main structural differences between plant and animal cells are the additional structures found in plant cells. These structures include: chloroplasts, the cell wall, and vacuoles. In animal cells, the mitochondria produces the majority of the cells energy from food.
what step in the water treatment process involves the removal of sediment
Answer: The first step is coagulation, which involves adding chemicals to the water. ...
The second step is called flocculation, in which larger particles called flocc form after coagulation.
Sedimentation occurs next when the heavy flocc settles to the bottom and is cleared away.
Explanation:
The oceans help regulate climate and clean up pollutants.
O True
O False
Answer: True I am sorry if this is wrong but I am pretty sure!
Explanation:
Will mark brainliest there’s a button for the pic
I'd say FLPE is the worst. It can run high temperatures but it's not safe and not safe with all foods, it's has a high cost.
how does the hadley cell transport heat in the atmosphere?
Answer:
In the Hadley cell, both sensible and latent heat are transported equatorward near the surface, while potential energy is transported above in the opposite direction, poleward. The resulting net poleward transport is only about 10% of this potential energy transport.
Explanation:
hope this helps :D
Which of these represents an individual form of life such as an animal, plant, or single-celled life form?
Organ
Organism
Organ system
Tissue
FREE BRANLIEST IF YOU ANSWER A foul ball can be caught by the defensive team for an out.
Answer:
TRUE!! IT CAN
Once in an organism, what are these atoms used for?
4. Which of the following is NOT a tenant of the Cell Theory?
a. All cells(come from existing cells.
b. All living things are made of cells.
C. Cells are the basic units of structure and function.
d. All cells contain a nucleus.
Answer: b. All living things are made of cells.
Explanation:
A cell is the smallest basic unit of life that is capable of independent functionality. A cell therefore cannot be made up of other cells because that would imply that there is a unit of life that is smaller than cells.
Cells are instead made up of organic molecules like protein and carbohydrates and when cells work together to achieve a common goal, they form a tissue. Tissues are the ones made up of cells not cells made up of other cells.
Which of the following describes an action taken during a winter birth that would not be needed during a summer birth?
supply additional heat source
suction mucus out of newborn’s mouth
monitor mother and newborn
rub mother’s milk on newborn lips
(for animal science)
Answer:
supply additional heat source
TRUE Or false NO WEIRD ANSWERS OR LINKS OR YOU WILL BE REPORTED.
Answer:
True. From what I know it's because many different organisms are on the cladogram.
:/
explanation:
Plz help fast will give 5 star
PLEASE HELP! WILL GIVE BRAINLIEST. Describe the contribution of photosynthesis and cellular respiration to the exchange of carbon between the atmosphere and the biosphere.
Cellular respiration and photosynthesis are essential to the carbon cycle because cellular respiration involves the intake of oxygen o2 and the exhale of carbon-dioxide co2 into the atmosphere. Where photosynthesis uses the carbon dioxide and water to create oxygen and sugars through energy to repeat the cycle. Respiration in general is a process where carbohydrates are turned into dihydrogen monoxide or water and co2(carbon dioxide). Living organisms together throughout the biosphere and atmosphere work together to continue this because carbon itself is an organic substance.
Answer:
Explanation: Cellular respiration and photosynthesis are important parts of the carbon cycle. The carbon cycle is the pathways through which carbon is recycled in the biosphere. While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.
The majority of a cell's life is in this phase.
A. centromere
B. interphase
C. cytokinesis
D. prophase