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Scientists have discovered a new animal its it possible for it to have no digestive system

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Scientists have concluded that large mammals, such as the woolly mammoth, roamed the earth before the ice age. How do we know that the woolly mammoth was alive in the ice age? A) fossils B) mass extinction C) evolution

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A group of organisms and the abiotic factors that affect them is

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Which of the following statements about human society and limiting factors is true? a. Modifications made to the environment to reduce the impact of limiting factors can cause disruption to the natural balance of an ecosystem. b. Humans cannot modify their environment to adapt it to their needs. c. Humans can completely overcome the factors that limit population size. d. Limiting factors are of no concern to human society, because they do not affect human populations.

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How can two pea plants that have different genotypes for seed color be identical in phenotype?

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Which statement best describes sexual reproduction? a.offspring of the same parents usually have identical chromosomes. b.offspring receive one set of chromosomes from each parent. c.male offspring receive most of their chromosomes from the father. d.female offspring receive most of their chromosomes from the mother.

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Which two scientists were credited with building the first three-dimensional model of dna?

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Name 3 different kind of scientists

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The table shows the relative size of the genomes, number of genes, and number of chromosomes for a variety of different organisms. Based on what we know regarding the genetic code of all living things, how does the genetic code of a eukaryote organism compare to that of a prokaryote organism? A) Prokaryote organisms have much simpler DNA, containing fewer than four nitrogen bases. B) Eukaryote organisms have a larger genome containing a more complex set of nitrogen bases. C) Both types of organisms contain exactly the same four nitrogen bases, but in different sequences and numbers. D) Both types of organisms contain exactly the same four nitrogen bases, in the exact sequences, but in varying numbers.

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A scientist has discovered a new plant species in the Amazon rainforest. She tells her fellow scientists that the plant she has found produces a cone. What might they say about how this plant is different from an angiosperm? Its seeds have one or two cotyledons. Its stems’ vascular bundles are scattered. It does not depend on insect pollination. It is a seeded vascular plant.

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How is the rock cycle like a recycling plant or factory

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A scientist discovers a cell that has chloroplasts, cytoplasm, DNA, and a cell membrane. Which statement best describes how the cell could be classified? The cell is prokaryotic because it has DNA. The cell is prokaryotic because it has cytoplasm. The cell is eukaryotic because it has a cell membrane. The cell is eukaryotic because it has chloroplasts.

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Why do scientists organize living things into groups? a. so they can find them in the wild more easily b. so that the organisms are easier to study c. so they can make sense of the variety of rocks on Earth d. so products from living things can be easily found in groceries

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In this wetlands ecosystem, the __________ is/are an important abiotic factor that could limit the underwater organism populations.

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What are some factors that could limit the ability for cells to survive?

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Scientists can determine if oxygen existed in Earth’s Archean atmosphere by A. determining the amount of outgassing that occurred. B. looking for oxidized iron in rocks. C. looking at the amount of salt content in rocks. D. determining how many people survived

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What factor influences Beach erosion during a hurricane, the most? Storm surge?

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Environmental factors are capable of changing ones dna and can cause uncontrolled cell growth that often results in cancer what are are these factors called

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Location plays a role in wetland type but is not the sole determining factor. T F

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Which of the following statements best describes the relationship between the environment and human health? a. The environment is the only factor that affects human health. b. Many aspects of the environment can have an impact on human health. c. Human health is impacted by changes in climate. d. The environment has no impact on human health.

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4. In an experiment, suppose that the wings of fruit flies were clipped short for fifty generations. The fifty-first generation emerged with normal-length wings. This observation would tend to disprove the idea that evolution is based on a. inheritance of natural variations b. inheritance of acquired characteristics c. natural selection d. survival of the fittest 5. Charles Darwin called the ability of an organism to survive and reproduce in its specific environment a. diversity b. fitness c. adaption d. evolution 6. Similar patterns of embryological development in different but related organisms are responsible for the formation of a. homologous structures b. analogous structures c. Hox genes d. intermediate fossil forms 7. If an allele makes up one half of the frequency of a population’s allele for a given trait, its allele frequency is a. 100 percent b. 75 percent c. 50 percent d. 4 percent 8. The frequency of phenotypes for a typical polygenic trait is most often illustrated as a. a scatter plot b. a bell-shaped curve c. a pie chart d. a histogram 9. Which of the following events do biologists consider a random change? a. directional selection b. speciation c. disruptive selection d. genetic drift 10. Which of the following statements defines the members of a species? a. They are temporarily isolated from each other b. The are geographically isolated from each other c. They mate and produce offspring d. They have identical genes

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Which factors affect the rate of photosynthesis? Select all that apply. light intensity pH temperature chlorophyll density water carbon dioxide soil nutrients no idea on this one :

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What are limiting factors in an ecosystem?

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Which factor was most responsible for the production of oxygen by the elodea? a the presence of light stimulated photosynthesis. b the plant contained a large number of mitochondria.

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When scientists take the genes of two different species and combine them, we call this _____. genetic testing gene coding genetic engineering all of the above?

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Scientists use observations and data to form and test

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All but one factor plays a part in water movement in and out of the cell. That is A) the presence of sodium potassium pumps. B) the concentration of solutes inside the cell. C) the concentration of solutes outside the cell. D) the concentration of water in and out of the cell.

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Cyanide is a poison that limits the ability of an animal cell to manufacture Atp.in a cell containing a small amount of cyanide,which process would be least effected.

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Which factor is MOST responsible for the ocean tides? A) the wind B) earthquakes C) the moon’s gravity D) density differences in the water

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Physical limiting factors of an ecosystem are such things as?

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