Answer:
The correct answer will be option E.
Explanation:
The features given in the question are the characteristics features of the group of bacteria belonging to Cyanobacteria.
These Cyanobacteria are the prokaryotes which are capable of synthesizing the food through a process called photosynthesis. These bacteria use sunlight as their energy, use water and air to synthesize food. They under anaerobic condition synthesize the nitrogen in special structures called heterocyst, a characteristic feature of cyanobacteria.
Thus, the features given in the question are:
1. contain photosystems to carry out photosynthesis.
2. producing oxygen
4. contain phycobilins
6. Hetrocysts: nitrogen-fixing structures.
7. The ancestor of plant chloroplasts.
Thus, option E is the correct answer.
Answer:
The difference between a renewable and a non-renewable natural resource is whether or not the resource can be replaced.
Explanation:
Natural resources are those useful for human beings and for that reason are consumed by them.
Renewable natural resources —such as water, plants and trees or solar energy— are usually renewed at a rate greater than or equal to their consumption, so they are not depleted.
A non-renewable natural resource, such as petroleum, usually has a limited existence, or its renewal speed is very slow, so its consumption can decrease its quantity or deplete it.
The difference between renewable and non-renewable resources is in their long-term availability or depletion.
Other options are not correct because:
- <em>Both types of resources exist in nature.
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- <em>Both resources can decrease, but one is renewable and the other can be depleted.
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- <em>Both renewable and non-renewable resources are useful for humans.</em>
It would be 50% because having a son won't effect the probability of the next gender of the offspring. Unlike having to pick out two variables out of a bag, being pregnant is like having a trail but once you become pregnant again the trail restarts and does not use the previous data. You become a girl if you have 2 x chromosome and a boy by having one of x and one y. the odds are 50/50
I think the answer is true not 100% tho
Answer:
Category D
Explanation:
In the USA, the Federal Animal Welfare Regulations require that research laboratories report animal use according to the species as well as the number of individuals subject to experimentation procedures. Moreover, animal use for research/teaching purposes is also reported according to the classification by pain and distress categories. Basically, this classification has four categories (B,C, D and E) in increasing order according to the pain level suffered by research animals. Animals within Category D include those subjected to potentially painful or stressful procedures. In consequence, in this category, it is imperative the utilization of proper anesthetics and/or analgesics in order to diminish the pain and suffering of these animals at the lower level possible.