Itried my best to make the pic clear, but the words might be still small

based on the phylogenetic tree

1. what does all life stem from according to this picture?

a. animals

b. bacteria

c. plants

d. eukaryotes

based on the phylogenetic tree

2. what major group came just before animals?

a. true bacteria

b. eukaryotes

c. sponges

d. plants and fungi

based on the phylogenetic tree

3. what group are mammals from?

a. fungi

b. amniotes

c. eukaryotes

d. tretrapods

based on the phylogenetic tree

4. what is the first amniote?

a. mammal

b. turtle

d. echinoderm

d. amphibian

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.  

answer; motor (efferent)neurons;