Answer:
Ecologists and paleontologists say that Earth is now experiencing another mass extinction. One-quarter of all mammals are endangered. But unlike some past extinctions this one is not caused by a single chance event such as an asteroid impact.
Explanation:
Answer:
Pulmonary plague, septic plague and bubonic plague.
Explanation:
So, Yersinia pestis is a rod-shaped bacterium. This microorganism can affect humans through the flea Xenopsylla cheopis. Then, the disease can manifest in three ways: pulmonary plague, septic plague or bubonic plague.
Pneumonic plague is the form of the disease that infects the lungs and its symptoms begin abruptly two to three days after exposure to bacteria. Patients have a high fever, chills, fast heart rate and often severe headaches.
Another form of the disease is the septicemic plague and the infection spreads in the bloodstream. The most common symptoms are nausea, vomiting, diarrhea, and abdominal pain.
Finally, bubonic plague, or also known as the minor plague, is a milder form of the disease that affects the lymphatic system and its symptoms are swollen lymph nodes, fever, headache, and exhaustion.
5 animals that live in the grass savanna is "Lion" "Black Rhino" "Giraffe" "kudu" "Elephant" and 2 plants is Acacia tree, Bermuda Grass
The correct option is this: HE COULD DETERMINE WHETHER THE HYPOTHESIS IS BASED ON REPEATED EXPERIMENTS.
An hypothesis is a proposed explanation based on prior knowledge which serves as a starting point for scientific experimentation. After the experiment, if the hypothesis is confirm to be true and other scientists test it also and find it to be true, then the hypothesis can be regarded as theory, because it has been tested many time and find to be true.<span />
Answer: The correct option is c. Segmentation evolved more than once in different branches of the cladogram.
Phylogenetic studies help to identify and understand evolutionary relationship between different life forms. It uses a diagram called as Cladogram to represent the branching of the evolutionary relationships. In cladogram studies each branching point tells a fundamental character of the evolutionary significance. Cladogenesis separates the gene pool by splitting into two or more than two separate pools each of which gives rise to one or more new species. Segmentation implies repeated parts and many animals consist of such repeated parts. Therefore, segmentation appears more than once in different cladogram branches.