D) The Earth was hit by a one or more objects from space 65 million years ago. The iridium layer shows an extraterrestrial cause for the extinction at the Cretaceous Tertiary boundary, discovered by the Alvarez family. The first discovery of this layer was in the Bavarian alps, in Lattengebirge. The Alverez family proposed that the extinction of the dinosaurs was due to a large meteor hitting the Earth at the end of the Cretaceous period, marking the KT boundary with this clay layer which has a high content of iridium. Iridium is not common on Earth, but is common in meteors.
206 bones
I hope this helps :)
I can’t see the image but CO2 is produced in the mitochondria during respiration
The mitochondria looks like this:
Answer: They usually run tests too see. For example, that's why they made blood tests. They take you blood from you, and run tests to see if you have a disease.
Explanation: Hope it helps!
Answer:
The correct answer is - mutualistic.
Explanation:
The symbiosis or relationship between the bacterium xenorhabdus namtophilia and Steinernema carpocapsae, the nematode host is known as mutualistic or the cooperation in between them. Both the organisms live in a symbiosis in which both are benefited.
The nematode lives free till the early infective juvenile stage only. Bacterium present in both conditions as individual and with the symbiosis of the host.
Thus, the correct answer is - mutualistic.
