Answer:
DNA or RNA
Explanation:
There are a number of similarities between viruses and cells. Both are too small to be seen with naked eyes and require a microscope for observation. Both contain genetic material, in the form of DNA and/or RNA. Both of them can replicate, that is, produce more organisms similar to themselves.
Answer:
I think that you meant autotroph, but the answer is producer
Explanation: the definition of autotroph is "an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide."
Answer:
C) releases oxygen into the air
Explanation:
Stomata are the minute openings present in the epidermis of leaves. Plant open stomata to take in carbon dioxide gas from the air which in turn is fixed into organic compounds during the process of photosynthesis. Oxygen gas is the by-product of photosynthesis. Plants release oxygen from stomata into the air. Therefore, dermal tissues in leaves have stomata and one of their functions is to release oxygen into the air.
The answer would be C, even though all of them are important for environmental health. Control of sexually transmitted diseases isn't ever talked about enough, especially with teenagers, and because of that, STD rates are on the rise and it's really sad.
Answer:
The formation of sedimentary rocks is indeed a physical change because we are only changing the physical structure of the rock/rocks by compacting them together, they're still rocks.
Explanation:
Remember that physical changes are when you are only changing a physical characteristic of an object. A common example of a physical change would be breaking a piece of wood. Even though the wood is now smaller, and its physical appearance has changed, the wood is still wood.
Sedimentary rocks are formed by compaction, where many rocks are compacted together, and the pressure causes all the rocks to form together into one big rock.
Sedimentary rocks are formed by many different rocks, which means they are still rocks, but they are now compacted together to form one bigger rock. "The formation of sedimentary rocks is indeed a physical change because we are only changing the physical structure of the rock/rocks by compacting them together, they're still rocks."
Hope this helps.
