Answer:
B and D are correct.
Explanation:
A is incorrect: Trees cannot live fully immersed in sea water.
C is incorrect: The surfaces are very varied all over the ocean floor.
Answer:
No.
Explanation:
This statement is saying, females and males have the same role and carry the same 'weight' in society. Even today, we see the unequality of these two genders today. For example, females are still held the assumption to stay at home, while males are out working business. This shows that males hold more weight than females, and that females aren't the same wheel on the same cart.
Answer:This species of grass would be classified as an INVASIVE species.
Explanation:
An invasive species is an animal or a plant that comes from another part of the world into another place where it is not originally from and it starts to grow or live there, invading the original or native species.
They are usually carried into other regions through ship ballast water and in most cases by people (through food from other countries or attached in clothes that were worn in another region)
The negative effect of these species is that can destroy the native species, cause extinction of the native species,harm the natural resources and affect how human use of these natural resources.
They are very competitive and can compete with the native species for limited resources hence they end up changing and disrupting the natural habitat of the native species. This affect the overall ecosystem and biodiversity.
Answer:
Yes
Explanation:
Yes, there is the presence of a threat.
This threat is known as instrumentation. There is an Instrumentation threat when changes are made in the instrument, or the changes are made in the researcher, or the scorer when the research is being carried out.
In this question, mrs smith is the one who is the researcher, the program of reinforcement can be called the instrument. She made errors during the first few week but started getting it right in the second week. So there is a slight change in these two weeks. Causing instrumentation threat to how valid the program is.
