Answer:
by National Research Council · 1987 · Cited by 3 — When traditional, or classical, breeders cross two sexually reproducing plants or ... A few techniques for gene transfer can handle segments of DNA at the upper end of ... Again, depending on the experiment's purpose, many copies or only one ... The transferred genes can also be reisolated from the animal or plant cells, put ...
Explanation:
What is the relationship between tissues and organs?
A. Tissues are made from a single, functional type of organ.
B. Organs are made from a single, functional type of tissue.
C. Organs are made from tissues with a similar structure and function.
D. Tissues are made from organs with a similar structure and function.
Write your scientific argument about what caused the size of the orange-bellied parrot population to decrease. As you write, remember to: Clearly state your claim. You may choose to use one of the two claims below, or you can create your own. Use your strongest evidence from the Island Ecosystem Food Web or the Evidence Cards to support your claim. Use the Scientific Argument Sentence Starters and the Word Bank below to help you explain your thinking. Science Seminar Question: What was the main cause of the decrease in the size of the orange-bellied parrot population? The population decreased because . . . Claim 1: births decreased. Claim 2: deaths increased. Scientific Argument Sentence Starters. Describing Evidence: The evidence that supports my claim is... My first piece of evidence is... Another piece of evidence is... This evidence shows that... Describing how the evidence supports the claim: If [blank], then ... This is important because... Since [blank], then... Based on the evidence, I conclude that... This claim is stronger because... Word Bank consumer population indirect effect ecosystem population resource population energy storage molecule competition reproduction
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 expertise suggests that habitat loss and degradation, particularly in the non-breeding range, has caused the decline.
Explanation:
Taylor uses a globe as a model to explain why we have day and night on Earth.
Question: How can Taylor complete his model and use it to explain day and night on Earth?
•First, identify one other object needed to complete the model.
•Explain why this object should be included, and suggest how Taylor could represent this object in his model.
•Then, describe how Taylor should move the parts of his model to show the causes of day and night.
•Finally, identify the amount of time this movement would take in the real world.
Answer:
i dont know but i hope you find help soon
Explanation:
PLEASEEEEE HELPPPP I WILL GIVE YOU BRAINLEAST
a two-paragraph report on flower reproduction
Answer:
Flowering plants reproduce sexually through a process called pollination. The flowers contain male sex organs called stamens and female sex organs called pistils. ... Cross-pollination happens when the wind or animals move pollen from one plant to fertilize the ovules on a different plant. The primary purpose of a flower is reproduction. Since the flowers are the reproductive organs of plant, they mediate the joining of the sperm, contained within pollen, to the ovules — contained in the ovary. Pollination is the movement of pollen from the anthers to the stigma.
Explanation:
Answer:
Alternation of generations occurs in plants, where the sporophyte phase is succeeded by the gametophyte phase. The life cycle of a flowering plant. The angiosperms were the last of the seed plant groups to evolve, appearing over 100 million years ago during the middle of the Age of Dinosaurs. Reproductive parts of the flower are the stamen and carpel. Often the carpel is referred to as the pistil, the female parts collectively termed the gynoecium. The androecium is the individual units of the androecium are the stamens, which consist of a filament that supports the anther.
Pollen Pollen grains, from the greek palynos for dust or pollen, contains the male gametophyte phase of the plant. The outer part of the pollen is the exine, which is composed of a complex polysaccharide, sporopollenin. Hypothesized steps in the evolution of the carpel. Nonvascular plants, the mosses, and liverworts have the gametophyte phase dominant. Vascular plants show a progression of increasing sporophyte dominance from the ferns and "fern allies" to angiosperms.
Brainlist Pls!
The mass of an unidentified rock is 27.5 grams. Students determine the volume of the rock by placing the rock in a cylinder with water. The students calculate the density of the rock. They determine the identity of the rock based on the density ranges in the table.
The students most likely have which type of rock?
Dolomite
Sandstone
Peridotite
Coal
The following diagram shows the branching tree diagram for some animals.
(Image below)
Which two organisms share the greatest number of derived characteristics?
Frog and kangaroo
Kangaroo and chimpanzee
Lion and chimpanzee
Shark and chimpanzee
Please answer asap!
Answer:
Pretty sure its Shark and Chimpanzee
Explanation:
They are the least shared amount of characteristics.
1. Which levels in the energy pyramid represent the consumers
2. Which level in the energy pyramid represents the primary consumer
Answers
Producers
Primary consumers
Secondary consumer
Tertiary consumer
Quaternary consumers
Answer:
It's producers because those are the one's that sell them to the consumers.
the punnett square below shows a cross between a pea plant with yellow seeds and a pea plant with green seeds
If mating produces 100 offspring, about how many will have yellow seeds?
A. 25
B. 50
C. 75
D. 100
life iscience 7th grade
Answer:
D
Explanation:
The yellow pea is dominant so if it is crossed with a pure recessive then they will all be yellow
According to Punnett Square, if mating produces 100 offspring, then all of them will have yellow seeds. Thus, the correct option for this question is D.
What is the Punnett Square?The Punnett Square may be characterized as a kind of table in which all of the plausible consequences for a genetic cross between two individuals with known genotypes are systematically demonstrated.
According to the question, there is a homozygous dominant genotype of one parent when crossed with the heterozygous genotype of other parents, then the genotypes of resultant offspring must carry at least one dominant allele which governs the phenotype of the entire offspring.
Therefore, according to Punnett Square, if mating produces 100 offspring, then all of them will have yellow seeds. Thus, the correct option for this question is D.
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The graph below shows the populations of two species from January 2010 to June 2011. One species is native to the ecosystem, while the other is a new species that was recently introduced to the ecosystem. How will the two populations most likely compare in December of 2011?
The main limiting factor for the plants and animals that live in the deciduous biome is ________________. Question 7 options: tornadoes cold temperatures in winter high temperatures poor soil
The main limiting factor for the plants and animals that live in the deciduous biome is cold temperatures in winter.
What would you need to survive in the deciduous forest?
Flora and Fauna living in the Deciduous Forest Biome must be able to adjust to warm and relatively hot summers and cold to freezing winters. They are also required to adapt to the four distinct seasons of this biome. There are also large amounts of rainfall and fertile soils in this biome.
Thus, cold temperatures in winter are the correct option.
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How can an offspring with the genotype (RR) have the same phenotype as the offspring with the genotype (Rr)? (R = round seeds AND r = wrinkled seeds)
Answer:
R (capital letter) is the dominant allele so the phenotype is the same
Explanation:
If a photosynthesis reaction begins with 3 grams of reactants, what will the total mass of the products be?
Answer: 3 g
Explanation: masses of products is same as masses of reactants.
Light is giving energy to reaction
How do the different amounts of water that is available around the planet affect the amounts of salt in the world's oceans?
Answer:
MMMMM WE LIKE FREE POINTS
Explanation:
The HPA axis of the endocrine system works together with the sympathetic nervous system to increase an individual's heart rate, blood flow, and blood sugar levels during times of stress. This stress response is also referred to as the
Answer:
Adrenaline rush aka fight or flight response
Explanation:
Epinephrine adrenaline and norepinephrine a release to focus attention on the task at hand heart rate and blood pressure increase delivering oxygen to the muscles for flight. The eyes take in more light to increase visual acuity and more sugar is released into the bloodstream to increase energy. Functions like digestion, reproductive, and urinary system are slowed
Inconclusive DNA results indicate _____.
O human error.
O a perfect match.
O a nearly perfect match.
O the two profiles do not match.
In which biome would you expect to find the greatest biodiversity?
a
Tundra
b
Coniferous Forest
c
Desert
d
Tropical Rain Forest
Answer:D tropical rain forest
Explanation:
Answer:
D
Explanation:
Tropical rain forests have the highest biodiversity and primary productivity of any of the terrestrial biomes.
Give an example of how the environment can affect an organism’s phenotype
Answer: Environmental conditions, such as temperature and availability of nutrients can affect phenotypes. For example, temperature affects coat color in Siamese cats. ... Height in humans is a complex phenotype influenced by many genes, but it is also influenced by nutrition
Explanation: Hope this helps luv :)
2. List the abiotic factors you can
identify in the meerkat's habitat
below.
The abiotic factors that are present in the image are the light from the sun, the air, the mountain, the water, etc., as abiotic substances, also known as abiotic factors, are non-living components of an ecosystem.
What are abiotic factors?Abiotic substances include physical and chemical factors that affect the ecosystem, such as water, air, light, temperature, soil, nutrients, minerals, etc, where as water is an abiotic substance and is essential for many cellular processes and regulating body temperature, light is necessary for photosynthesis, which is the process that allows plants to produce energy from sunlight, and temperature is important because it affects the metabolic rate of organisms, and extreme temperatures can cause stress or even death.
Hence, the abiotic factors that are present in the image are the light from the sun, the air, the mountain, the water, etc.
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Observe: Switch to the Protist sample. Protists are unicellular organisms common in ponds On the MICROSCOPE tab, select the 100x radio button and focus the image.
Watch the motion of the protists at 100X and 400X. What structures allow each protist to move?
I REALLY NEED HELPP
Euglena, Amoeba and paramecium are unicellular organisms. Euglena moves by flagellates, Amoeba by pseudopods and paramecium moves using cilia.
What are unicellular organisms?Unicellular organisms are lower level organisms having only one cell and an undeveloped nucleus. Most of them are aquatic lives and moves using some special organelles.
Amoeba moves by an arm-like structure emerging from its body and contains microtubules within the arms. Euglena is flagellated microorganism moving by flagella.
Paramecium is an aquatic unicellular microorganism having special whip like structure called cilia which moves it in back forth. Ciliary bodies are like oars to move in a direction.
Therefore, amoeba moves by pseudopodium, euglena moves by flagella's and paramecium moves by cilia.
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What parts of the Earth were involved?
Answer:
were involved in the like outside of the crust which is the land inbetween the atmosphere
Explanation:
which of the following are consumers
Mosquito Fish
Rye Grass
Isopod
Algea
Cricket
Freshwater Snail
Elodea
Duckweed
Mustard
Alfalfa
How does the ocean interact with land and air?
Answer:
Explanation:
One way that the world’s ocean affects weather and climate is by playing an important role in keeping our planet warm. The majority of radiation from the sun is absorbed by the ocean, particularly in tropical waters around the equator, where the ocean acts like a massive, heat-retaining solar panel. Land areas also absorb some sunlight, and the atmosphere helps to retain heat that would otherwise quickly radiate into space after sunset.
The ocean doesn't just store solar radiation; it also helps to distribute heat around the globe. When water molecules are heated, they exchange freely with the air in a process called evaporation. Ocean water is constantly evaporating, increasing the temperature and humidity of the surrounding air to form rain and storms that are then carried by trade winds. In fact, almost all rain that falls on land starts off in the ocean. The tropics are particularly rainy because heat absorption, and thus ocean evaporation, is highest in this area.
Outside of Earth’s equatorial areas, weather patterns are driven largely by ocean currents. Currents are movements of ocean water in a continuous flow, created largely by surface winds but also partly by temperature and salinity gradients, Earth’s rotation, and tides. Major current systems typically flow clockwise in the northern hemisphere and counterclockwise in the southern hemisphere, in circular patterns that often trace the coastlines.
Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth’s surface. Without currents in the ocean, regional temperatures would be more extreme—super hot at the equator and frigid toward the poles—and much less of Earth’s land would be habitable.
What evidence have you discovered to explain how cells are organized in the body, similar to the way dots in pointillism art is organized.
Answer:
it depends where the the muscle is located and what is the purpose
Explanation: