Explanation:
grain sizes and shapes of mineral grains and other constituents in a rock
Independent variable i think
The Cranium protects the brain and is a bit like a skull.
The Medulla helps respiratory and the circulatory systems with breathing and in the brain the neurons form forebrain to midbrain travel through the Medulla.
Running water results in erosion on landforms.
Answer:
The correct option is <em>B) Only triazine-resistant weeds survived and reproduced, so each year more pigweed was triazine-resistant.</em>
Explanation:
With time, the pigweed became resistant to triazine. As we know, according to the theory of natural selection only those species are able to survive and reproduce which are better adapted to live in an environment and adapt to the environmental changes. As the triazine- resistant weeds were better adapted survive and reproduce in the area, it began passing its resistant genes to offsprings. As a result, the population of the pigweed increases.