The correct answer for the question that is being presented above is this one: "(D) The United States government entered into a "gentleman's agreement" to ban immigration from certain countries." The statement that is true about immigration to the United States during the last two decades of the nineteenth century is that <span>The United States government entered into a "gentleman's agreement" to ban immigration from certain countries.</span>
Answer:
Scientists think that foxgloves have evolved the poisons as an evolutionary adaptation and defense mechanism that provided them with better survival capacities.
As poisons are repellents which help the plants to repel any predator or attacker and enhance their survival. That is why scientists are of the view that old fox glove did not necessarily had this poison many hundred years ago but some how there would be facing harsh circumstances or alot of predators. Due to which, with the passage of time they developed these chemicals which enhanced their life time and survival chances.
Some poisonous chemicals from foxglove are:
- Deslanoside
- Digitoxin
- Digitalis glycoside
Hope it help!
<span>Civilizations wanted to settle and build cities and/or outposts along trading routes for so it would be easy to acquire what they didn't have, and sell what they did, and gain economic prosperity. These became the most desirable and wealthy spots, and thus were fought over in wars.</span>
Answer:
the answer is normal fault srry so late hope this helps
