The accumulation of partially decayed plant material is called Pea Peat may be covered with sediment and placed under extreme andss With time and pressure peat may be compressed into boaAu tread (Paragraph 2)The rate of fossil fuel formation was great during the period. The lands were covered by Carbon accross and the climate was ool Zdanne so this favored year round growth. The Svps dominated the landscape and hence created most of the coal. Also present but not in type of seed plants. abundance were the (Paragrpah 3) which tree dominated in the Carboniferous? trees Another tree, Giant Horsetails, was also abundant. These were both svps, so they still had external fertilization (released spores and sperm into the water). They flourished in this tropical/wet climate. (Pg 401, paragraph 2) What happened to the climate and hence the svp trees at the end of the \"R Carboniferous? climakt tin coz t ceel ca med agey in The water receded so the spores and sperm croaked Only pmaALlycDonytes relatives of SVP trees remain today. One group of Gymnosperms, survived to today. They evolved pollen to transport sperm and so moved to internal fertilization. They were able to take over the drying landscape at the end of the Carboniferous!!!!! Solution Ques-1: The accumulation of partially decayed plant material is called peat. Peat may be covered with sediment and placed under extreme pressure. With time and pressure peat may be compressed into \"peat bog\" or mire Ques-2 The rate of fossil fuel formation was great during the carboniferous period. The lands were covered by peat (dead trees & dead plant organisms) and climate was cold & damped. So this favored year round growth. The SVPs dominated the landscape and hence created most of the coal. Also present but not in abundance were the vascular -angiosperm type of seed plants.