Answer: biomarker: A substance used as an indicator of a biological state, most commonly disease.
trace fossil: A type of fossil reflecting the reworking of sediments and hard substrates by organisms including structures like burrows, trails, and impressions.
fossil record: All discovered and undiscovered fossils and their placement in rock formations and sedimentary layers.
strata: Layers of sedimentary rock.
fossiliferous: Containing fossils.
Explanation: hope this is what you mean if not ill try again
Answer:
The solution is<u> hypotonic</u>
Explanation:
Molecules in a solution move from <u>highly concentrated</u> regions to regions of <u>low concentration</u> in an effort to reach a state of equilibrium- where the molecules are equally distributed. This always occurs with the molecules moving down the concentration gradient.
Solutions can be:
- hypertonic, or more concentrated;
- hypotonic- less concentrated
- isotonic- same concentration
At 40% salt concentration, solution A is <u>hypertonic</u> while the less concentrated solution at 0% salt concentration is<u> hypotonic</u>.
The correct answer is keratin. The protein found in hair and nails is known as keratin. Keratin is produced by the keratinocytes. Keratin is the basic component of the hair and the nails of a human being. It can also be found in the skin cells in the outer layer.
Answer:
The correct answer is "kin-branding, whereby all individuals are labeled actively by each other at birth so that kin can be discriminated from nonkin".
Explanation:
Kin recognition, also known as kin detection, is an ability developed by some animals to detect organisms that are genetic related and discriminate among other animals that are not (nonkin). There are some mechanisms that animals use for kin recognition, however labeling actively each other is not one of them. In most cases, animals use kin recognition based on pheromonal cues.
The DNA double helix is held together by two types of bonds, covalent and hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components). Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing. These hydrogen bonds are individually weak but collectively quite strong.