Cnidarians do not have a nervous system like ours. a. How does it differ from ours?

Answer:

Part A: Fossil Evidence

Part B: Biogeographical Evidence

Part C: Anatomical Evidence

Explanation:

plz thank it

Answer:

Here u go I hope this can help u!!

Explanation:

There are five lines of evidence that support evolution: the fossil record, biogeography, comparative anatomy, comparative embryology, and molecular biology.

Answer:

the mantle

Explanation:

2885 kilometers thick and is the middle layer of the Earth

the earth's mantle

the mantle is made up of several minerals such as iron, magnesium, silica and oxygen.

Answer:

definitely D because a rainforest is extremely vast when it comes to different species

Explanation:

brainliest plz?

The ecosystem which is most likely has the greatest biological diversity and therefore the highest sustainability is a rainforest that has many types of plants and animals. Therefore, the correct option is D.

An ecosystem refers to the biological community where the biotic as well as the abiotic components interact with each other and influence each other.

It encompasses all the living organisms in a specific area as well as physical and chemical factors that shape their environment such as air water soil climate and environment. They play an important role in functioning the earth's biosphere, as they provide a range of essential services.

The study of ecosystem and interaction between is components is referred to as ecology. Hence, the correct option is D.

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Answer:

a sugar, a water molecule, and a nitrogenous base

Explanation:

Answer:

a sugar, a phosphate group, and a nitrogenous base

Explanation:

i had it for study island that was the correct answer

Explanation:

the answer to this question is prokaryotic cells lack memebrane bound organelles and eukaryotic cells contain membrane bound organelles

Answer:

theres no expirement attached, attach an expirement and i can answer

Explanation:

Answer:

Messianic secret

Explanation:

The Messianic secret is a theme in the Gospel of Mark that portrays the disciples and others as recognizing Jesus' identity as the Messiah. Jesus directed them not to tell anyone else.

Hope this helps!

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Answer:

Explanation: Abiotic factors for fish is water, temperature, amount of dissolved oxygen in water, etc. Penetration of sunlight is also important in fresh water habitat. Biotic factors are predators, disease causing organisms, organisms available as food, population density of competitors, etc.

Explanation:

Answer:

The first answer is rainfall, and the second answer is the last one

Explanation:

1.

Rainfall is measured with a rain gauge in inches/millimeters - Most modern rain gauges generally measure the precipitation in millimetres in height collected on each square meter during a certain period, equivalent to litres per square metre. Previously rain was recorded as inches or points, where one point is equal to 0.254 mm or 0.01 of an inch.

2.

Climate is the weather conditions prevailing in an area in general or over a long period. The other 3 describe the weather conditions in a place for just a week, or day while climate is measured annually (basically over a long time)

Good luck with the rest of your exam, I hope you catch up with all your work and do well :)

Answer:

They both had a tail as an embryo.

Explanation:

Both human and dogs have tail as an embryo. Temporary tail-like structures are present in the human embryo. These tail like structure develop around the fifth or sixth week of gestation, having about 10 to 12 vertebrae and removed when it reached to its full development stage while on the other hand, tail present in dog's embryo also developed with time and we can see when the dog baby is fully formed.

Answer:

They both had a tail as an embryo.

Their arm and leg structure is similar but may have a different function.

Explanation:

Vestigial structures are those body parts that have lost or reduced their original function during the evolution of a species. These vestigial structures might be found in many animals, including human beings. Vestigial structures were plenty functional for common ancestors. But with evolution, they degenerated, stunted, and became rudimentary for some of the new species.  

During the first 4 months of embryogenesis, all mammals have a tail at some point in their development. Dogs develop this structure and keep it during their whole lives, but humans lose it with time during embryogenesis. The tail disappears, and its forming vertebras get fussed with each other composing the coccyx, which represents a vestigial structure. This tailbone is the remnant of a missing tail.

In many animals, the function of the tail is to stabilize, equilibrate and mobilize. But in humans, the coccyx, located at the end of the vertebral column, has lost this original function.

The fact that whales, humans, and dogs all have the same bones in the same order, but they matured differently in later embryological development, is an example of homologous characters.  

Homologous characters have the same fundamental structures. They also share the same relations with adjacent structures, and they have the same embryological development.  

These structures might show variations between organisms exhibiting them, according to their function and to the environment in which the organism lives.  

These homologous characters are common in organisms related and that share a common ancestor.

two long polynucleotide chains

A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of these chains is known as a DNA chain, or a DNA strand. Hydrogen bonds between the base portions of the nucleotides hold the two chains together

Molecules of DNA are composed of long chains of nucleotides.

Nucleotides are the building blocks of DNA  and RNA adenine (A), thymine (T), guanosine (G), and Cytosine (C. In RNA, uracil (U) is present instead of thymine.

The pentose sugar is the ribose sugar in RNA and deoxyribose sugar in DNA. In deoxyribose sugar, oxygen is absent from the 3' carbon.

Phosphate groups are attached through the 5-C of pentose sugar by an ester bond. One polynucleotide chain is formed when the phosphate of one nucleotide forms a phosphodiester bond with the sugar of another nucleotide.

A double-stranded structure is formed by base pairing between nucleotides. The adenine binds to thymine by two hydrogen bonds and guanine binds to cytosine by three hydrogen bonds.

Therefore the molecules of DNA are composed of long chains of nucleotides.

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Answer:

The platypus is one of only five species of monotremes in the world. These are mammals that lay eggs instead of giving birth to live young.

:-))

Clouds are categorized by their shape and their elevation. Which list shows cloud type in order from lowest to highest in the sky?

The answer is C ( stratus, altocumulus, cirrus )

Answer: it’s C

Explanation:

Answer:

The Mitochondria

Explanation:

Answer:

The cell wall and the chloroplasts.

Explanation:

The chloroplasts help generate energy in the plant cells.

Answer:

Some physical characteristics, such as the color of the human skin or eyes, are controlled by at least two genes. These traits are known as polygenic traits. The number of genes that determine the color of the iris is unknown, but the most significant of them are found in Chromosome 15 and they are named OCA2 and HERC2. These genes are associated with the production of melanin.

Explanation: Polygenic inheritance describes the inheritance of traits that are determined by more than one gene. These genes, called polygenes, produce specific traits when they are expressed together. Polygenic inheritance differs from Mendelian inheritance patterns, where traits are determined by a single gene. Polygenic traits have many possible phenotypes (physical characteristics) that are determined by interactions among several alleles. Examples of polygenic inheritance in humans include traits such as skin color, eye color, hair color, body shape, height, and weight.

B - store and transmit hereditary information

Answer: c not all cells have a nucleus (prokaryotic cells don’t)

Explanation:

Answer: Humans

Explanation:

They perform sexual reproduction.

Answer:Once you're infected, viruses invade host cells within your body. They then use the components of the host cell to replicate, producing more viruses. After the replication cycle is complete, these new viruses are released from the host cell. This usually damages or destroys the infected cells.

Explanation:

Answer:

Microorganisms capable of causing disease—pathogens—usually enter our bodies through the mouth, eyes, nose, or through wounds or bites that breach the skin barrier. Organisms can spread—or be transmitted—by several routes.

Explanation:

Answer:

Species

Explanation:

I majored in Biology

Answer:

Species I got 90% but this one was right

Explanation:

proof

Answer:

One of the most noticeable effects of gravity in the solar system is the orbit of the planets. The sun could hold 1.3 million Earths so its mass has a strong gravitational pull. When a planet tries to go past the sun at a high rate of speed, gravity grabs the planet and pulls it towards the sun

Explanation:

Answer:

Explanation:

The answer would be 502 grams because of the law of conservation of mass, you can't create or destroy mass so then 2 grams plus 500 grams is 502.

Answer:1,000 grams

502 grams

500 grams

498 grams

Explanation: The answer would be 502 grams because of the law of conservation of mass, you can't create or destroy mass so then 2 grams plus 500 grams is 502. I am 100% positive that B is correct.

Answer:

Kleenex

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Answer: DNA

Explanation: The RNA is a big affect on the DNA because, there will be no repairs of the DNA leading to cancer