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!
The principle which allowed Marta to find her dog Roxy is known as an: d. absolute threshold.
<h3>What is an
absolute threshold?</h3>
An absolute threshold can be defined as the smallest (lowest) level of stimulus such as light, touch, sound, etc., that can be detected by a living organism, usually half the time.
In this scenario, a principle which allowed Marta to find her dog Roxy amid all of the other barking dogs is known as an absolute threshold.
Read more on absolute threshold here: brainly.com/question/15301528
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Theodore Roosevelt became the youngest man to assume the U.S. presidency after President William McKinley was assassinated in 1901.
Allowing people to smoke in barns shovels because smoking in barns can start fires and shovels cant help you prevent them either
