A study finds that a toxicant has a lethal dose-50% (LD50) of 1000 milligrams per kilogram of body weight. Which statement correctly describes the test
animals in the study?
A. Half were exposed to that dose of the toxicant.
B. Half died, regardless of the dose they received.
C. Half benefited from exposure to the toxicant.
D. Half died when exposed to that dose of the toxicant.

Need with my drivers ! ** willl mark you brainliest if answered correctly ** when the center line is one solid yellow line and one broken yellow line, who may cross the line to pass? a. traffic on the side with the broken yellow line b. traffic on the side with the solid yellow line c. traffic on either side d. nobody

Which courtroom participant is james in the given scenario? josh, the accused, is undergoing a criminal trial. mr. kent, josh’s neighbor and college professor, has been called upon to vouch for josh’s good conduct, academic performance, and likeable behavior. mr. kent is thus playing the role of a in the courtroom.

For review 1. in terms of which government is sovereign, differentiate among a unitary system, a confed- eral system, and a federal system of government. 2. to which level of government does the constitution distribute the enumerated po implied powers? concurrent powers? reserved powers? provide several power. 3. what matters fall within the scope of state sovereignty? differentiate among dual federalism, cooperative federalism, centralized federalism, and conflicted federalism. how does the national government use grants-in-aid, mandates, and preemption to direct the policy of state and local governments? 6. what do we mean by intergovernmental relations? why is the term a good description of u.s. federalism today? 7. list several advantages and several disadvantages of a federal system.