Answer:
The correct answer is D. some RNA viruses.
Explanation:
The enzyme reverse transcriptase (RT) is found in some retroviruses, such as HIV. It is a DNA polymerase, which converts the single stranded RNA of the virus into a double stranded DNA (retrotranscription process).
Answer:
The yellow leaf was not exposed to the sun so it can't produce sugar.
Explanation:
The yellow region of the leaf didn't produce sugar because it wasn't exposed to sunlight. Part of the leaf was exposed to the sun, thus this leaf produced sugar, while the yellow part of the leaf did not because it was not exposed to the sunlight.
Answer:
Quantitative observations are made by using numbers.
Explanation:
Quantitative observation is the use of math and statistical methods for evaluation. Quantitative observation is used to understand the problem by generating numerical data or data that can be transformed into usable statistics.Quantitative observation uses measurable data to formulate facts and uncover patterns in research.
The energy radiated downward warms the surface and lower atmosphere. Adding more CO2<span> to the atmosphere means more heat radiation is captured by the atmosphere and radiated back to Earth. Methane, CH</span>4<span>, is another very important greenhouse gas that is part of the </span>carbon<span> cycle.</span>