Answer:
Seven other species are extinct, prehistoric species known from fossils. The giraffe's chief distinguishing characteristics are its extremely long neck and legs, its horn-like ossicones, and its distinctive coat patterns. It is classified under the family Giraffidae, along with its closest extant relative, the okapi.
C The percentage of humus in the soil will decrease.
Explanation:
The percentage of the humus in the soil will decrease if the decomposers that livers in the field dies.
Decomposers are organisms that breaks down organic matter in nature. They are usually a group of micro-organisms that feeds on dead plant and animal matter.
- Decomposers reduce dead organisms and plant matter into organic matter.
- Soil is made up of soil air, organic matter, water and rock materials.
- Soil organic matter is in form of humus in the soil.
- When decomposers are no longer available in the soil, the organic matter diminishes.
- The soil will therefore lack humus.
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Answer:
The correct answer is : option A. emotional arousal in the amygdala activates memory consolidation in the hippocampus.
Explanation:
Hippocampus is the part of the brain known for the consolidation of the memories to short time to long term memories based on their emotional relevance.
Amygdala is the part of the brain that is responsible for emotional arousal or forming emotion which is later activates the hippocampus to consolidate this memory. Memory with the emotional aspects retained for long term than boring or humdrum experiences due to the reason mentioned above.