Answer:
Unlike the one-way flow of energy, matter is recycled within and between ecosystems.
Explanation:
Answer:
chloroplast
Explanation:
chloroplast helps in the presence ofsunlight to aid photosynthesis
<u>Answer:</u>
Collection of data is the part of an observational study.
Option: (c)
<u>Explanation:</u>
- Observational study is the non-experimental research that is usually used in the investigation of certain effects that is due to the treatment.
- The observational study is qualitative study. The major part of the observational study is to collect data and analyze it properly.
- It is used in many fields like sociology, psychology and statistical aspects.
- Mainly there are three types of observational study: cross-sectional, case-control and cohort study.
i guess vascular
are u having test on google class room
