What method can scientists use to
determine when the fossil above appeared
on Earth?

What molecule contains hydrogen , carbon, nitrogen, and oxygen?

Nucleic Acids

Answer:

Nucleic Acids

Explanation:

"Nucleic acids are organic compounds that contain carbon, hydrogen, oxygen, nitrogen, and phosphorus. They are made of smaller units called nucleotides. Nucleic acids are named for the nucleus of the cell, where some of them are found."

Answer:

Interesting

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Answer: Sexual reproduction provides genetic diversity because the sperm and egg that are produced contain different combinations of genes than the parent organisms.

Explanation:  Each resulting cell, or gamete, resulting from meiosis has only half the amount of DNA as the parent cell.

Answer: 50% will be red and 50% will be white

Explanation: Make a punnet square

R r Rr=red rr=white

r Rr rr

r Rr rr

Answer:

50 percent of the offspring would be red

50 percent would be white

Answer:

it's D. waves

Explanation:

took the test on edge and got it correct

Answer:

The answer is below :D

Explanation:

Cell's are considered the basic structure of life because every living thing is made up of cell's . Cell's have stuff inside them called organelle's such as the Nucleus , Mitochondria , Vacuole , and  more!   If we weren't made up of cell's what would we be made up of ?   There are skin cell's , brain cell's , blood cell's .              Hope I helped and have a great day ∩^·ω·^∩ !

Answer

A

Explanation:

that is the cell membrane it is used specifically for that reason, to help good things get it and to keep bad things out

C) A Mutation always has a neutral effect on the function of the organism

Answer:

well B the uterus walls shed away and come out in clots of blood.

Answer:

AUG GCU GGC UGA AAU

Explanation:

I am double checking.

Answer:

Two ureters.

These narrow tubes carry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys. If urine backs up, or is allowed to stand still, a kidney infection can develop.

Answer: Full Moon

Explanation:

Answer:

A

Explanation:

Its only the blood that transports Oxygen and carbon dioxide to and from the tissues.

Answer:

G. bare rock, lichens, grass, trees

Explanation:

The 6 steps of primary succession are;

I - bare rocks

II - pioneers (mosses, lichen, algae, fungi)

III - annual herbaceous plants

IV - perennial herbaceous plants and grasses

V - shrubs

VI - shade intolerant trees

VII - shade tolerant trees.

I would appreciate brainliest, if not that's ok!

Answer:

why did u answer efhe9udghewuidsgweiudfghdsuhfg

Explanation:

Answer:b

Explanation:

Answer:

20.5%

Explanation:

Hope this helps!!

Answer:

C

Explanation:

ecosystem is living AND non living things

The best definition of an ecosystem is option C: "A system formed by the interactions of living organisms with the nonliving physical environment."

An ecosystem is a community of living organisms, such as plants, animals, and microorganisms, interacting with each other and their nonliving environment, including the atmosphere, soil, and water.

This interaction creates a functional system that can be characterized by energy flow and nutrient cycling. The other options are not accurate definitions of an ecosystem, as ecosystems involve both living and nonliving components, and the interactions are not limited to a single species.

Ecosystems are not isolated, and they can interact with other ecosystems. For example, rivers and streams can transport nutrients and organisms downstream, connecting different ecosystems such as a forest and a freshwater system. Similarly, the atmosphere can transport pollutants and other materials across vast distances, affecting ecosystems far from their source.

In summary, an ecosystem is a complex, interconnected system where living organisms interact with each other and the non-living components of their environment. Understanding the functions and interactions within ecosystems is critical to developing effective management strategies for conserving biodiversity and maintaining the ecosystem services that humans depend on.

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Answer:

Basic body structure.

Explanation:

Organisms classified in the phylum category on the basis of their basic body structure. Organisms are classified in the groups and subgroups on the basis of similarities and differences. Those organisms that show resemblance is to be put in the same group. They have some similar characteristics such mode of reproduction, mobility, feeding behaviour and body structure etc.

Answer:

Variation

Explanation:

Answer: Variation

Explanation:

Has different species of rattlesnakes shown in the graph.

Answer:

False, because phospholipids are a type of lipids and the nuclear envelope contains nucleic acids.

Explanation:

Hope this helps.

It is true that phospholipids that are a part of the nuclear envelope (membrane around the nucleus) can easily move from one part of the cell to another, and may ultimately become part of the cell membrane, the ER, a vesicle membrane, etc.

The nuclear envelope is made up of two concentric lipid bilayer membranes separated by a 20-40 nm intermembranous space.

In many places, the outer membrane is joined to the rough endoplasmic reticulum. The outer membrane of the nuclear envelope, like the rough ER, is dotted with ribosomes.

The nuclear envelope is made up of two membranes: an outer and an inner phospholipid bilayer. The lumen of the rough endoplasmic reticulum is connected to the thin space between the two layers (RER).

Nuclear pores, which are small channels that run across the nuclear envelope, allow substances to enter and exit the nucleus.

Each pore is lined by a group of proteins known as the nuclear pore complex, which regulates which molecules can enter and exit.

Thus, the given statement is true.

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Answer:

It is ATP on the other arrow

It would be balanced if another force of 50 N was applied to the back of the car.

Answer:

C

Explanation:

Hope this helps!!

Answer:

to assist other lymphocytes

to kill cells infected with a virus or cancer

to help in the body’s immune response

Explanation:

Following are the functions of T-lymphocytes, here:

T-lymphocytes, also known as T cells, are a type of white blood cell that plays a key role in the immune system. They are produced in the bone marrow and mature in the thymus gland.

One of the main functions of T-lymphocytes is to assist other lymphocytes, such as B cells, in the immune response. They do this by releasing chemicals that help to activate and coordinate the immune response, and by directly attacking infected cells.

T-lymphocytes also have the ability to kill cells that are infected with a virus or cancerous cells. They do this through a process called cell-mediated immunity, in which they recognize and bind to specific proteins on the surface of infected cells. Once they have bound to the infected cells, they release chemicals that kill the cells, helping to prevent the spread of the infection or cancer.

T-lymphocytes are an important part of the body's immune system and play a vital role in helping to protect the body against infections and disease.

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Answer:

This statement is true because cells have the capability to divide.

Answer:

It is true

Explanation:

I took the test its right

Answer:

carbohydrates

Explanation:

Carbohydrates are the main source of energy for the body. They are the sugars, starches, and dietary fiber that occur in plant foods and dairy products. Carbohydrates are mainly found in plant foods. They also occur in dairy products in the form of a milk sugar called lactose.