Answer:
because every year there is a new strain of flu
Explanation:
Answer:
1. Bring new alleles from DNA
2. Favor certain alleles
3. Creates new alleles from DNA
4. Randomly selects alleles
Explanation:
1. The zebra enters a separate population, bringing their unique makeup into a group with similar genetic makeup
2. The organisms with genes for shorter heights will eventually die off, favoring organisms with greater height
3. The snake's DNA changes, allowing it to create stronger venom
4. The deaths of the animals weren't planned or the result of greater genes.
This is true because when the temperature is high, the particles move accordingly and move fast. This is why you see water boiling fast instead of slow.
Answer:
b-short-term environmental change
Explanation:
this natural change/flooding is a short environmental change because it last a short period of time.
