Answer:
1. The descendants are Blue whales, and Humans
2. Back bone Lungs , radius and ulna (front limb bones), structures for producing milk
Explanation: It points to the descendants of common ancestors to blue whales and humans, If not please tell me more clearly what you meant by descendants.
Answer:
-a sense organ
-a muscle
-a gland
Explanation:
The nervous system is subdivided into; the central nervous system (CNS), which includes the brain and spinal cord, within the vertebral column; and the peripheral nervous system, which includes nerves that branch into the rest of the body from the brain and spinal cord. Nervous tissue responds to electrical impulses, allowing for communication between different regions of the body. The PNS connects to muscles and other organs and tissues like glands in the endocrine system. Together the nervous system, the PNS plays a role in the dissemination of information throughout the body and mediates our response to stimuli.
The peripheral nervous system is further divided into the somatic nervous system responsible for carrying out sensory and motor information between the peripheral nervous system- including sensory organs like the eyes; and central nervous system; and the autonomic nervous system which regulates involuntary bodily functions like heartbeat, breathing and blood flow. Additionally, the skeletal system does not directly onnet to the PNS, rather, its miscles mediate responses, and facilitate the movement of bone.
Answer:
Particles need to collide in order to react. Which best explains why sawdust burns more quickly than a block of wood of equal mass under the same conditions? The molecules move more quickly in the sawdust than in the block of wood. The pressure of oxygen is greater on the sawdust.
Answer:
Los primeros en llegar a tierra no solo ayudaron a alterar los ciclos de nutrientes, sino que también contribuyeron a una de las extinciones masivas de la Tierra. Y a medida que las plantas evolucionaron, también lo hicieron los ríos, creando más hábitats para las cosas verdes y los animales que siguieron.
Explanation:
English: The first arrivals on land not only helped alter nutrient cycles, but contributed to one of Earth's mass extinctions. And as plants evolved, so did rivers, creating more habitats for green things and the animals that followed.
