The answer to your question is a
Answer:
Coronaviruses are named for the crown-like spikes on their surface. There are four main sub-groupings of coronaviruses, known as alpha, beta, gamma, and delta.
Human coronaviruses were first identified in the mid-1960s. The seven coronaviruses that can infect people are:
Common human coronaviruses
229E (alpha coronavirus)
NL63 (alpha coronavirus)
OC43 (beta coronavirus)
HKU1 (beta coronavirus)
Other human
depends on the plant, most likley C
Answer:
1. C China, 2. B China, 3. C western bias against them keeps them out of studies
Explanation:
- China became the world's largest producer and exporter of textiles, the largest producer and importer of cotton, and the largest producer and exporter of furniture and toys not until the development of the 20th century. China is the biggest producer and the consumer of the coal. it also emits more of the carbon dioxide than any other country about 30% in the world.
