Look at the phylogenetic tree. Do robber crabs have more in common with humans or with sponges? What conclusion can you reach about their evolution?

Hope this helps! From Plato

Explanation:

Robber crabs have more in common with humans, which are vertebrates. Sponges are simple organisms that don’t have tissues. Crabs and humans have specialized cells and tissues, bilateral symmetry, and a coelom. According to the phylogenetic tree, vertebrates and arthropods have more nodes, or common ancestors, than crabs have with sponges.

advantage of using stem cells in medical research:

1.       it provides medical benefits in the fields of therapeutic cloning and regenerative medicine.

2. it provides great potential for discovering treatments and cures to a variety of diseases including parkinson disease, spinal cord injuries, diabetes, alzheimer’s disease and many more.

3. limbs and organ could be grown in lab from stem cells and then used in transplant or treat illness.

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation: