Answer:
Adaptive Immune System
Explanation:
The adaptive immune response consists of cellular immunity and humoral immunity. They both involve specialized cells for fighting off bacteria and viruses which is what the adaptive immune system is responsible for.
15 degrees Celsius is colder than 20 degrees Celsius. It gets colder as the temperature decreases.
In an experiment, independent variables are those which are changed or manipulated to find the value of dependent variables. Here number of roses is dependent variable because its number depends on how many aphids are present. So option A is incorrect. Kinds of aphids killed is also dependent variable, because its population depends on how much chemical is sprayed to kill it. So, option C is also incorrect. Kind of rose is irrelevant, because aphids will eat any kind of rose. So the right answer is - <u>Option B, kinds of chemicals used</u>. This is because it will determine the number of aphids left and population of roses.
Answer:
a.) Two producer are <u>land plants</u> and <u>tiny water plants</u>.
b.) Two consumers are <u>fox</u> and <u>heron</u>.
c.) tiny plants → water fleas → diving beetle → small fish → perch → heron.
(I think this is correct because there are six species listed and they go in order.)
d.) The small fish eats the water fleas and diving beetle.
e.) The heron and perch eat the small fish.
f.) If the frog disappeared there may be a lower population of fox and heron in that area, and there would be more slugs, insects, and diving beetles.
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