What form of life was developing on Earth 4500 million years ago?
A. Bacteria
B. Invertebrates
C. Life hadn't formed yet
D. Dinosaurs

The giant tube worms make up the following:

This consists of all the organisms and the physical environment with which they interact.

In an ecosystem, there is the population of organisms which live there together with various communities which was why all of the above were chosen.

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Answer:

Marcello Malpighi was the person who used a microscope to see blood capillaries in the tail of a fish. He was a famous Italian scientist of the 17th century, and is known as 'the father of microscopical anatomy, histology, physiology, and embryology,' so he is definitely the correct answer

Explanation:

Answer:

Marcello Malpighi was the person who used a microscope to see blood capillaries in the tail of a fish. He was a famous Italian scientist of the 17th century, and is known as 'the father of microscopical anatomy, histology, physiology, and embryology,' so he is definitely the correct answer.

Explanation:    

A tiny electric message moves through a long part of a brain cell called the axon. When a message goes to the end of a nerve, it sends chemicals called neurotransmitters. These substances move through a tiny gap and attach to special parts of another nerve cell's outer covering.

Messages called impulses are sent from one nerve cell to another through a connection called a synapse. This process is called synaptic transmission. Synapses are connections between nerve cells or between nerve cells and other cells, like muscles or glands.

The neuron sending the signal is called the presynaptic neuron. When a signal travels down a nerve cell, it causes little sacs called vesicles to release chemicals called neurotransmitters.

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Based on the information, we can infer that the measurement that could be the least probable is caudal peduncie depth strandard error. Also, the trend is for lake values to be higher than river values.

To identify the values we must analyze the table and identify they are not the trends. In this case we can infer that the tendency is for the values of the lake to be higher than the values of the river because all the values of the lake are higher than those of the river.

On the other hand, we can infer that the value that could be the least successful is the peduncie depth strandard error because it shows equal values. However, if we take into account the previous values, it should not be the same in both cases.

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Based on the position of the Earth, moon, and Sun in the image above, a spring tide will occur during a new moon or full moon because the gravitational attraction between the Sun and Moon on the water is the strongest and is denoted as option D.

This is referred to as a phenomenon where the sun and the moon are in line with each other which results in the pulling of the ocean's surface in the same direction.

This causes high tides known as spring tides and is therefore the reason why option D was chosen.

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When we see the reciprocal cross between a red-eyed female (homozygous) and a white-eyed male,we observe that none of the offspring will have white eyes. Additionally, the sex of the offspring will be half male and half female since the ratio of males to females is 1:1.

The reciprocal cross for a red-eyed female (homozygous) and a white-eyed male can be shown as follows:Female (XrXr) x Male (XwY). Females have two X chromosomes and males have an X and a Y chromosome. Red eyes are dominant to white eyes; therefore, we use Xr to represent red eyes and Xw to represent white eyes.

The offspring are as follows:All F1 females are heterozygous (XrXw).All F1 males are hemizygous (XrY).The F1 generation will have red eyes since the dominant allele is present.

None of the F1 individuals will have white eyes as the recessive allele is not present in the F1 generation.

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Answer:

I do think that the main difference between amphibians and arthropods is that amphibians are vertebrates while arthropods are invertebrates

One solid piece of granite to minimize the surface area is used to build a building that would last for centuries.

What is Granite?

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The goal of mitosis image/sequence classification is to detect if a mitotic event occurs in the sequence.

In cell biology, mitosis is a part of the cell cycle in which replicated chromosomes are separated into two new nuclei. Cell division by mitosis gives rise to genetically identical cells in which the total number of chromosomes is maintained. Therefore, mitosis is also known as equational division.

The process of mitosis generates new cells that are genetically identical to each other. Mitosis helps organisms grow in size and repair damaged tissue.

Mitosis is important for three main reasons: development and growth cell replacement and asexual reproduction.

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Answer:

C is the answer your looking for.

Answer:

a b and e

Explanation:

organism one gets its energy from the world while organism 4 gets it's energy from biotic life and its energy doesn't transfer anywhere else

Answer:

Deforestation is the major problem causing lack of rich species in Costa Rica. This is due to over grazing by cattle.This may lead to flooding which affect fertility of the soil.These animals graze on  the plants without regulations,and cause erosion as their hoofs percolate the soil,  further reducing soil fertility.

In addition to sustain the beef production,  trees were fell to for cattle ranching.This ultimately contributed to loss of the forest species.

Banana plantation is an  additional factor.Forest were cleared to cultivate banana, which affects forest population.

Explanation:

liver contain abundance of smooth endoplasmic reticulum

Answer: asuume

Explanation: i would asuume 2

Nitrogen-fixing bacteria are prokaryotic organisms that transform nitrogen gas into nitrogen compounds like ammonia and nitrates.

The graph that correctly shows the nitrogen-fixing bacteria in the soil is graph 2.

Nitrogen-fixing bacteria can be explained as:

Thus, the correct answer is graph 2.

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Answer:

Bitumious Coal

Explanation:

Because it's important in generation of electricity and it's raw materialistic behavior it's set to be the most abundant one. It accounts about 45% coal in the whole United States

Answer:

Explanation:

An adaptation is a trait an organism has to make it better suited for the enviorment

Fitness, however is the measure of how many offspring an organism can produce and this depends on these individuals having these sucessful adaptations.

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Explanation:

RNA growth is always in the 5′ → 3′ direction: in other words, nucleotides are always added at a 3′ growing tip, . Because of the ANTIPARALLEL nature of the nucleotide pairing, the fact that RNA is synthesized 5′ → 3′ means that the template strand must be oriented 3′ → 5′.

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Answer:

The statements that describe the planets are:

Mars and Venus are mostly rock.

Saturn is classified as a gas giant

Earth is much smaller than Uranus.

Explanation:

Mars and Venus are the fourth and second planets from the sun respectively. These planets along with a few others in our solar system are classified as terrestrial planets because of the compact rock that makes up its surface. For this reason, the statement that Mars and Venus are mostly rock is correct

The ancient Greeks were pioneers in the field of astronomy, their discoveries lead to much of what we know today about our solar system. Despite this, only five planets were discovered by them. Some discoveries like

Neptune

Uranus

Pluto (No longer a planet)

are not credited to the ancient Greeks. This makes the statement, "The ancient Greeks discovered all the planets in the solar system" false.

Saturn and Jupiter are classified as gas giants because they are made up primarily of gases like hydrogen and helium. This tells us that "Saturn is classified as a gas giant." is true, and "Jupiter is mostly rock surrounded by clouds." is false.

Pluto is considered a dwarf planet does not discribe the planets because the current scientific consensus is that pluto does not meet the minimum requirements to be considered a planet, since the scientific community agrees that "Planets" and "dwarf planet" describe separate entities. However, the statement itself is true. Though not considered a planet, it has been given the status of "dwarf planet".

The final statement, "Earth is much smaller than Uranus." is true because Uranus has a diameter four times greater than the earth.

The statements that Mars and Venus are mostly rock and Saturn is a gas giant are true due to the composition of these planets. We also consider that Earth is much smaller than Uranus because Earth has only one-fourth of the diameter of Uranus and only 6% of its surface area. The remaining statements are untrue.

Answer: 1- Mars and Venus are mostly rock.

3-Saturn is classified as a gas giant.

5- Pluto is considered a dwarf planet.

6-Earth is much smaller than Uranus.

Explanation:

1,3,5,6  Got it correct

Fibroids are abnormal growths that develop in or on a woman's uterus. Sometimes these tumors become quite large and cause severe abdominal pain and heavy periods. In other cases, they cause no signs or symptoms at all. The growths are typically benign, or noncancerous.

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Answer:

Sperm is male gametes

Explanation:

The labeled parts of the human skeleton shown are found in the attachment.

A skeleton is a structural framework that holds most animals' bodies in place.

There are two types of skeletons namely the exoskeleton and the endoskeleton.

The axial skeleton and the appendicular skeleton are the two components of the skeletal skeleton. The skull, vertebrae, ribs, and sternum make up the axial skeleton, which is the body's main structural component. The bones in the extremities make up the appendicular skeleton.

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Climate zones at low latitudes are hotter because they receive more direct sunlight. Therefore, the correct option is option A.

Due to the Earth's tilt and the orbital geometry of its planet, climate zones at low latitudes are hotter because they receive more direct sunlight. The tilt of the Earth's axis in relation to its orbit around the sun is roughly 23.5 degrees. At various points on the Earth's surface during the year, this tilt produces fluctuations in the amount of sunlight that is received. The angle at which sunlight strikes the surface is almost perpendicular in low latitudes, which are nearer the equator. As a result, there is more direct and concentrated heat since the sunshine is concentrated over a smaller area.

Therefore, the correct option is option A.

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Answer:

Lactic Acid Fermentation

Explanation:

Lactic acid fermentation is a metabolic process by which glucose or other six-carbon sugars are converted into cellular energy and the metabolite lactate, which is lactic acid in solution. Lactate, which is just the deprotonated form of lactic acid, gives the process its name. The bacteria that make yogurt carry out lactic acid fermentation, as do the red blood cells in your body, which don't have mitochondria and thus can't perform cellular respiration.

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The type of replication error that would be most likely to result in genetic variation among organisms is a mutation.

Mutations are changes in the DNA sequence that occur during the replication process. They can introduce new genetic variations by altering the sequence of nucleotides in the DNA. Mutations can be caused by various factors, including errors in DNA replication, exposure to mutagenic agents (such as radiation or certain chemicals), or spontaneous changes in the DNA structure.

When a mutation occurs in the DNA of an organism, it can lead to changes in the genetic information. These changes can be beneficial, detrimental, or have no significant effect on the organism's phenotype. However, if a mutation provides a survival advantage or increases an organism's reproductive success, it may be selected for and passed on to future generations, resulting in genetic variation.

The occurrence of mutations is a natural and ongoing process in the evolution of organisms. It contributes to genetic diversity, allowing populations to adapt and respond to changes in their environment over time. Therefore, mutations are the primary replication error that leads to genetic variation among organisms.

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Answer:

There are about 50 Orange-bellied Parrots remaining in the wild, and a captive breeding population of around 320 individuals. The species is at risk of extinction in the wild in the near-term. Current knowledge suggests that habitat loss and degradation, particularly in the non-breeding range, has caused the decline.