Which is characterized by an absence of jaws?

Answers

Answer 1

Answer: It's a Lamprey Sea Horses have fused jaws

Answer 2

Answer: the sea horse is characterized as the jawless fish

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If you are in an emergency and there is no space to the side to steer out of the way of a crash, __________.
All BUT one descriptive phrase applies to the illustration of water. That is

where does embryo development take place in oviparous animals?

Answers

Oviparity means a mother animal does not retain the eggs of her offspring, the embryonic development occurs outside a living body. Most fish, amphibians, and reptiles are oviparous while all birds, bugs, and arachnids are oviparous.

What are two different forms of a single gene called? A. traits

B. alleles

C. factors

D. chromosomes

Answers

Alleles are two different forms of a single gene.

The correct answer is Alleles

Which of the following organisms evolved from dinosaurs?A. birds
B. crocodiles
C. sharks
D. snakes

Answers

I guess I would say crocs. Their used to be water dinos like them called mosa that couldnt go on land. Todays modern version crocs can.

Which of the following is not true concerning rainforests?a. Rainforests are responsible for most global oxygen turnover.
b. The undergrowth of rainforests is choked by weeds and plants.
c. Rainforests are characterized by high levels of rainfall.
d. Not all rainforests are tropical rainforests.

Answers

Rainforests are responsible for most global oxygen turnover is not true concerning the rainforests.

Further Explanation:

Rainforests are dense jungle and considerably tall. They are referred to as rainforest because every year, high rainfall occurs in these areas. The climate in these forests is very humid and hot, so the plant and animal exist in these areas and are adapted to this environment. The normal temperature of these areas is 70 degree Celcius – 85 degree Celcius-. Many household items are obtained from these forests. Most of South Africa and western Africa has the largest rainforest. In India and Australia, smaller rainforests are present.

Rainforest provides numerous benefits such as maintain the climate, greenhouse effect and provide space for animals and plants. Also, they produce food and medicine for many organisms. They are not responsible for providing global oxygen because plant present in humid areas takes a higher amount of oxygen to fee vegetation.

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Answer Details:

Grade: High School

Subjects: Biology

Topic: Rainforest

Keywords:

Rainforest, South-Africa, households, climate, greenhouse, organism, largest, global oxygen, areas, Australia, climate, greenhouse effect.

Rainforests have a unique ecological structure where the dense canopy of trees filters out much of the sunlight, leading to limited light penetration on the forest floor. The correct answer is b. The undergrowth of rainforests is choked by weeds and plants.

As a result, the undergrowth of rainforests typically has limited vegetation due to the lack of sufficient light, rather than being choked by weeds and plants. The majority of plant life and diversity in rainforests is concentrated in the upper layers of the forest, such as the canopy and understory.

Rainforests are characterized by a dense canopy formed by tall trees that grow close together and have large, spreading branches. These trees create a thick layer of foliage that blocks much of the sunlight from reaching the forest floor. Consequently, the amount of available light in the understory, the lower layer of the forest, is significantly reduced.

Therefore, the correct answer is b. The undergrowth of rainforests is choked by weeds and plants.

For more details regarding rainforests, visit:

brainly.com/question/4711545

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What idea is Malthus known for?

Answers

ogy of Human Populations: Thomas MalthusThomas Malthus (1766-1834) has a hallowed place in the history of biology, despite the fact that he and his contemporaries thought of him not as a biologist but as a political economist. Malthus grew up during a time of revolutions and new philosophies about human nature. He chose a conservative path, taking holy orders in 1797, and began to write essays attacking the notion that humans and society could be improved without limits.Population growth vs. the food supply
Malthus’ most famous work, which he published in 1798, was An Essay on the Principle of Population as it affects the Future Improvement of Society. In it, Malthus raised doubts about whether a nation could ever reach a point where laws would no longer be required, and in which everyone lived prosperously and harmoniously. There was, he argued, a built-in agony to human existence, in that the growth of a population will always outrun its ability to feed itself. If every couple raised four children, the population could easily double in twenty-five years, and from then on, it would keep doubling. It would rise not arithmetically—by factors of three, four, five, and so on—but geometrically—by factors of four, eight, and sixteen.
Between 1800 and 2000 the human population increased about six-fold. Has the food supply kept pace? Will there be enough food to support the projected population of 9.2 billion in 2050?If a country’s population did explode this way, Malthus warned that there was no hope that the world’s food supply could keep up. Clearing new land for farming or improving the yields of crops might produce a bigger harvest, but it could only increase arithmetically, not geometrically. Unchecked population growth inevitably brought famine and misery. The only reason that humanity wasn’t already in perpetual famine was because its growth was continually checked by forces such as plagues, infanticide, and simply putting off marriage until middle age. Malthus argued that population growth doomed any efforts to improve the lot of the poor. Extra money would allow the poor to have more children, only hastening the nation’s appointment with famine.A new view of humans
Malthus made his groundbreaking economic arguments by treating human beings in a groundbreaking way. Rather than focusing on the individual, he looked at humans as groups of individuals, all of whom were subject to the same basic laws of behavior. He used the same principles that an ecologist would use studying a population of animals or plants. And indeed, Malthus pointed out that the same forces of fertility and starvation that shaped the human race were also at work on animals and plants. If flies went unchecked in their maggot-making, the world would soon be knee-deep in them. Most flies (and most members of any species you choose) must die without having any offspring. And thus when Darwinadapted Malthus’ ideas to his theory of evolution, it was clear to him that humans must evolve like any other animal.

Rain forests cover just 6 percent of the Earth’s land surface, yet they contain _____ percent of Earth’s species.

Answers

rain forests contain 70 percent of Earth's species.

yes 70% of earths species are in the rain forest

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The marine flatworms (polycladids) are the smallest of the free-living flatworms sometimes reaching lengths of 15 centimeters true or false?

Which of the following best describes a characteristic of Fungi that differentiates them from Bacteria?a.Fungi are eukaryotes, while Bacteria are prokaryotes. b.Bacteria are heterotrophs, while Fungi are autotrophs. c. Bacteria have gametangia, while Fungi do not. d.Fungi have cell walls, while Bacteria do not.

What is the name given to any group of tissues and organs that coordinate to perform related biological functions?

Mitosis is important because it allows