The hypothesis by the farmer can be tested by conducting experiments using the aged insecticide on a new set of flies on another farm.
<h3>What is a hypothesis?</h3>
A hypothesis is an explanations put forward to explain an observation.
Based on the observation that the insecticide became less effective, the farmer hypothesized that it was because the insecticide degraded with age.
This hypothesis can be tested by using the aged insecticide on a new set of flies on another farm.
Therefore, experiments can be used to confirm or disprove a hypothesis.
Learn more about hypothesis at: brainly.com/question/11555274
#SPJ1
Answer: The surface of an epithelial cell which lies closest to its blood supply is called as the Basal surface.
Epithelial cell is primarily composed of two surface-
1) Apical surface- It is exposed to the environment and lies towards the lumen or internal organ cavity.
2) Basal/ Basolateral surface- It is not exposed to the environment. It lies interiorly and attached to the basement membrane via integrin.
Epithelial cells do not have own blood supply. For obtaining nutrients, they are dependent on the blood capillaries which are present in the nearby tissues. For accomplishing this, the basal surface of epithelial cell plays an essential role. The nutrients from blood enters basal surface via basement membrane which is a selectively permeable membrane.
Thus, basal surface of epithelial cells lies closest to the blood supply.
Answer: Three
Reason/Explanation:
The cat, you and the dog are all different populations. Together, there are three populations.
-DustinBR
Answer:
Prokaryote/Bacteria.
Explanation:
The features of the cell which is mentioned in this question match with that of prokaryotic organisms like bacteria.
The salient features of a bacteria are mentioned as under:
1) Presence of nucleoid instead of nucleus: Bacteria do not have well defined nucleus like eukaryotes so their chromosomal material is freely scattered in the cytosol.
2) Plasma membrane: They have plasma membrane which surrounds their interior i.e. their cytosol and other organelles.
4) Cell wall: Outside their plasma membrane they have a rigid cell wall made up of peptidoglycan which provides them a specific shape.
3) Ribosomes: They have a lot of ribosomes in their cytosol.
Emergence of disease
Bursts of algae growth
Collapse of fish -populations
