Answer: B. True
Explanation:
The tissue tropism can be define as the ability of the microbe to infect specific cells and tissues of the host that supports the growth of particular microbe like virus and bacteria.
Some viruses have broad tissue tropism they can infect many cell types. Other viruese can infect only single cell or tissue type.
A because plants need the sun in order to live
Answer:
A. The RNA polymerase subunits of the P.syringae strain probably have extra flexibility so that they can move more freely in colder temperatures.
Explanation:
Because there is no difference in the amount of the RNA polymerases but rather their activity, the difference lies in their structure and not their sequence. Hence the answer can't be (B) or (D). Adaptations are made to broaden the conditions of survival. Hence E. coli would not limit it's survival by limiting its growth to warmer temperatures. Hence the answer is (A) the RNA polymerase subunits of the P. syringae strain probably have extra flexibility so that they can move more freely in colder temperatures.
The answer to your question is
.3 million years is 300,000 years
.02 million years is 20,000 years
