Answer:
Fact: a thing that is known or proved to be true.
Hypothesis: a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
Theory:a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
Law: a statement of fact, deduced from observation, to the effect that a particular natural or scientific phenomenon always occurs if certain conditions are present.
Explanation:
Note: these are not my words, credits to google search.
Exchange of gases in fish is very efficient because of: the large surface area of the gills. the large surface area of the blood capillaries in each gill filament. the short distance required for diffusion – the outer layer of the gill filaments and the capillary walls are just one cell thick.
Answer:
9 normal : 3 striped : 3 spotted: 1 striped and spotted.
Explanation:
The F1 progeny contains no spots or stripes and are considered as normal, it means normal tail and normal head are dominant on their alternative traits. So, it means that the F1 progeny are heterozygous in nature for both of the traits.
The cross between 2 F1 progeny is dihybrid cross of lizards (heterozygous) which will produce offspring in 9:3:3:1 ratio, where 9 are normal, 3 striped which are dominant in the one character, 3 spotted which are dominant in other, and 1 will be stripped and spotted which is recessive in nature.
Answer:
b. steroid
Explanation:
Steroids can cross the lipid membrane bilayer thus being able to relay the secondary message.
All consumers only get 10% of the energy and nutrients from what they ate due to respiration, body mass, excretion and egestion
