The Discovery<span> of Radioactivity. In 1896 </span>Henri Becquerel<span> was using naturally fluorescent minerals to study the properties of x-rays, which had been</span>discovered<span> in 1895 by Wilhelm Roentgen</span>
It is the last choice because their similar bone structures suggest they once had a common ancestor, which is why they are all mammals.
Answer: A- segmentation
Explanation:
Both Millipedes and centipedes are arthropods with jointed legs and multiple segments. While millipedes are flattened slightly with multi segmented bodies, where the first segment is usually legless, while the second to the fourth are characterised with two legs and then the rest have four legs.
A centipede on the other hand, is a multi segmented anthropod a pair of legs on each segment, and their legs range from 30 to 354 on their one inch length bodies, which are known to be longer than that of millipedes.
Answer: frig metamorphosis is complete
Explanation:
This is because in complete metamorphosis, frog develop from egg to adults. Metamorphosis refers to change of shape and growth in different stages of animals life cycle.
Frog mate in the rainy season.
There are four stages of frog metamorphosis and they are;
1 Egg : the female mate with the male and the male fertilizes the egg. The female releases the fertilized egg inside water , they egg are jelly like or cover with jelly covering.
2. Tadpole: the egg then hatched into tadpoles. The tadpoles live in water, it does not have lungs and limbs. It move like fish and uses gills to breathe. At this stage it starts developing hind limbs and later lungs. It has long tail
3. Froglet : At this stage, the lungs and the front legs develop. It floats above the water to breathe. The tail become shorter and it uses nutrients stored in the tail to feed or survive.
4. Adult : this is the final stage, the young frog leave water and start live on land, it's tail disappear completely and it's start feeding on insects.
Answer:
When Carl Woese developed the modern system of classification, he broke the previous kingdom of __monerans_ into the two kingdoms of Bacteria and Archaea.