You are a doctor examining a bone sample taken from a patient with weak bones. you find that the bone tissue contains many small pores. this is most likely caused by

You are a doctor examining a bone sample taken from a patient with weak bones. You find that the bone tissue contains many small pores. This is mostlikely caused by reduced bone marrow in the spongy bone.

An autotrophic protist - they can perform photosynthesis and mainly consist of unicellular algae. they can be divided into number of systematic group according to the shape of their cell and the type of photosynthetic pigments they use.