1. Homologous Traits:
    a) Both the frog and rabbit have a homologous trait. Frogs are the largest group of the amphibian class. They live all over the world, and require to live near water sources to be able to reproduce. They are characterized by their abilities to jump, make croaking sounds, having slimy skin, and bulging eyes. Also, frogs have four limbs folded under their body, webbed feet, no tail, range in many different colors, and some are toxic. Rabbits are mammals that live in various habitats. They are herbivores with long ears, short tails, strong hind legs, and long rear feet. Also, they have fur of different color, depending if they are domestic or wild. The wild rabbits usually have brown or tan fur so they can camouflage, and domestic ones are usually black, white, or spotted. Rabbits are characterized by a great sense of sight, hearing, and great ability to run and jump.

   b) The forelimbs of frogs and rabbits are homologs. The forelimbs of frogs are constructed of the humerus, ulna, radius, and carpal bones.The forelimbs are mainly used to move and balance themselves. They support the stout body of the frog when they sit or walk. These front legs also help to absorb the impact when they land from a jump. On the other hand, rabbits mainly use their forelimbs for the claws that grow on them. They also use them to hold on to things, especially food, with the paws. This forelimb is divided into an upper arm (brachium), middle forearm (antebrachium), and distal hand (manus). They use their claws on the forelimb to dig the ground and build their home, known as burrows. The rabbit evolved its front legs to use as a digging tool, for the need to hide from predators and have a place to live.

   c) The common ancestor of the frog and rabbit is a fish (Eusthenopteron), which lived more than 385 million years ago. The similar structure of forelimbs, for the frog and rabbit, that is traced back to this fish shows that they share an evolutionary origin.

       

2. Analogous Traits:
   a) Two species that possess an analogous trait are worms and snakes. Worms and snakes have many physical similarities. They are both long and legless creatures. Worms are part of invertebrate phyla. There are various types of worms but most share a cylindrical and tubular body shape. They can live in wet or dry habitats, so they are a key in the food chains of many ecosystems. Also, some are parasites and other are free-living. Snakes are carnivores and also have lots of different species. They do not have movable eyelids, limbs, ear openings, and a bladder. Snakes are amniote vertebrates covered in scales.
   b) The shape of the snake and worm are analogous. The snake and worm evolved this shape to dig into the ground. The ground is their main habitat and they use their digging abilities to protect themselves from predators.
   c) In reality, the snake evolved to be able to dig and build its underground tunnels. They did not evolve from a type of worm. Snakes are more related to the Komodo dragon. They evolved from a reptile, like lizard, and happened to get a body/shape like a worm.   
    

         
                                 

Darwin

1. Alfred Russel Wallace greatly influenced Charles Darwin's Theory of Natural Selection.
2. Wallace was a British biologist who created a similar theory of natural selection to that of Darwin's. He was also influenced by Thomas Malthus' work about the pressure of population growth. Wallace concluded that animals and plants must also be under this same pressure, like humans. He described that these other living things could not reproduce freely due to their environment and natural selection. https://evolution.berkeley.edu/evolibrary/article/0_0_0/history_14
3. The first point that all organisms have the potential to reproduce exponentially, is the same point that Wallace tried to prove wrong. He also used it as a basis to prove that natural selection helped to avoid this. The second point of explaining why reproduction does not occur freely was also explained by Wallace who suggested that the environment plays a big role. In addition, the next four points about who gets the limited resources was explained by Wallace as the traits that better enable them to gain them, or natural selection.
4. No, Darwin could not have developed his theory without Wallace's help. At least not at the time that he did. It would have taken him much more time to figure it all out on his own. Also, Darwin's Theory was so similar to Wallace's, so it was of great help to him.
5. The attitude of the church made Darwin scared to publish his work. He did not want to be punished by the church or have his career ended.