It is a tectonic plate, it is constantly moving and shaping the Earth's crust.
Answer:
The answer is 'D'- Their arm bones have the same structure, but not function. These are homologous structures.
Explanation:
Homologous structures are those which share a basic common structure but perform different function. The hand of a human performs functions like <em>writing, cutting, washing, chopping</em> etc. The wings of a bat are used for the purpose of <em>flying</em>.
Also, <em>a dolphin's flippers, a bird's wing, a cat's leg</em> are all <u>homologous structures</u>. The structures which are homologous have the following features:
- They share a <em>common origin</em>
- Their <em>anatomy</em> is similar
- They have a <em>similar pattern of development</em>.
Each human has 2 alleles and are called diploid organisms. We receive 1 allele from each biological parent.
Answer:
nervous system
Explanation:
The nervous system is also a fight-flight system...meaning the reflexes are in work to either fight or fly away.Hope it helps:)
