Genetic variation in a population allows for phenotypic variation, meaning that different traits exist in the same population. When the environment changes, the members of the population are tested by natural selection with regards to how well adapted their specific traits are to the new environment. If the traits they have do not suit their environment, this results in reduced survival and fitness, leading to less of that trait in the population. However, if the traits they have are adapted to the environment, they become naturally selected for with better survivability and fitness (leading to a higher frequency of that trait in the population). Thus, evolution has occurred.
Scarlet fever was discovered in 1827, I believe
I think this is correct
1. Organelle, cells, tissues, organs, organ systems, organisms, population, communities, ecosystems and finally biosphere.
2. (Human Body) Bone cells, Fat cells, Nerve cells.
3. neuron, a collection of neurons, nervous system, brain
4. Plants don't have a liver, stomach or lungs, while animal organ systems do.
Answer:
The correct answer will be option-D
Explanation:
Learned helplessness is defined as the psychological condition in which the person starts believing that the person is incapable of doing and accomplishing small tasks and has no control or lost control over the surrounding environment.
This condition happens when the person fails to escape the shocks caused by the aversive events and starts believing that the outcomes are independent of their response.
This condition is biological and is caused by the inhibition of the ventromedial prefrontal complex pathway associated with the learning ability. The ventromedial and also dorsal raphe nucleus is involved in the learned helplessness.
Thus, option-D is the correct answer.
A Venus flytrap is, therefore, an angiosperm (a plant that flowers in order to reproduce and then bears fruit to distribute seeds once fertilized).