Answer: D
Explanation: fungi kingdom is Hetrotropiv and is unicellular
Answer:
the Rhyniognatha hirsti
Explanation:
at age 400 million years old
Packets of light energy are called photons.
Answer: 1and 4
Explanation: iron is an element not an alloy. An ionic lattice is not bonded covalently.
The positive effect of using chemistry is the generation of energy without fossil fuels.
Chemistry is the branch of science that deals with the study of the nature, properties and composition of matter as well as the changes that matter undergoes. Chemistry has really contributed positively to the advancement of the society.
Lately, there has been a lot of emphasis on alternative sources of energy apart from fossil fuels. One such options is the use of hydrogen fuels. Chemistry has been at the forefront of this research.
Hence, one positive effect of using chemistry is that energy can be generated without burning fossil fuels.
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