Answer:
a ray because it has a jaw and a backbone
Explanation:
Ray fish is considered to be in class Chondrichthyes, and are characterized by their enlarged, winglike pectoral fins, cartilaginous skeleton, jaw, scales and backbone. Ray fish is in the same family as Sharks, however very smaller. It has a stinging pines which is considered as backbone.
It is not seahorse, because seahorse has no cartilaginous skeleton.
It is not Salmon, because it has no cartilaginous skeleton
It is not skates either, because skates has no backbone.
Answer:
i think is c
Explanation:
its the only one that really makes since
O D. Internal factors.
This question was on Brainly itself.
Answer:
2.1 children per family
Explanation:
When the total fertility rate is at replacement (2.1 children per family), the two children born essentially replace the parents when they die. The replacement level TFR is 2.1, not 2.0, since not all females survive to their childbearing years.
