<span>Pteridophytes (ferns) have true roots and vascular tissue that allows water to move farther
through the plant so that they don't depend on absorption of water held
on the plant as a mass of moss plants would.
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In HIV-infected patients, there is a gradual loss of CD4+ T cells over time. These cells, also called T helper cells, organize the immune system's attack on disease-causing invaders, like Salmonella.
Answer:the cell membrane provides protection for a cell
Explanation: that some molecules can diffuse across the lipid bilayer but others no
Answer:
The mass of an object is a measure of the object's inertial property, or the amount of matter it contains. The weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. The pull of gravity on the earth gives an object a downward acceleration of about 9.8 m/s2.
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The correct answer choice from the above statement about the proper ethical role of science in public policy is:
To refuse to testify on controversial issues
It highly unethical and unprofessional to accept and testify controversial issues
<h3>What is scientific method </h3>
Scientific method refers to the systematic investigation of a particular phenomena through observations and experiment.
So therefore, the correct answer choice from the above statement about the proper ethical role of science in public policy is:
To refuse to testify on controversial issues
Learn more about scientific method:
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