The answer is D) the organ system.
Explanation: The allele for black is B and the allele for white is W. The heterozygous phenotype is known as erminette.
Explanation:
The most common and fastest way of measuring ocean depth uses sound. Ships using technology called sonar, which stands for sound navigation and ranging, can map the topography of the ocean floor. The device sends sound waves to the bottom of the ocean and measures how long it takes for an echo to return.
