Covalent bonds are the strongest chemical bonds. They are chemical bonds in which electrons are shared between atoms.
Answer:
Chordates share some common traits. At some point in their life cycle, they have a notochord, a nerve cord, and pharyngeal (fayr uhn JEE uhl) slits in the neck or throat. The notochord is a flexible rod that supports the animal's back. ... Sharks are one type of vertebrate animal that have backbones made of cartilage.
Answer:
Monospermy and Physiological Polyspermy. In general, the entry of more than two spermatozoa into the egg cytoplasm, referred to as polyspermy, causes aberrant effects on meiosis completion or embryo development and hence embryonic death, due mainly to excess male centrosomes delivered into the egg.
Explanation:
From glucose 
ATPs are produced.
ATP:
- One glucose molecule is divided into two pyruvate molecules during glycolysis, requiring two ATP molecules while generating four ATP molecules and two NADH molecules.
- For the cell to utilize as energy, glycolysis results in a net gain of two pyruvate molecules, two ATP molecules, and two NADH molecules.
- Glucose breaks down into pyruvate and energy during glycoses
- From glucose 6- phosphate to lactate 3 ATPs are produced.
ATPs are generated from which one is utilized when fructose 
phosphate is converted to fructose 
bisphosphate. So the net yield is 
ATP.
From dihydroxyacetone phosphate 2 ATPs are produced.
As the cycle occurs only once either from DHAP or PGAL (glyceraldehyde 
phosphate)
Three irreversible reactions of glycolysis:
Hexokinase
Glucose + ATP
Glucose
phosphate + ADP
Phosphofructokinase-I
Fructosephosphate + ATP Fructose
bisphosphate 
ADP
Pyruvate kinase
Pyruvate ATP
Learn more about ATP here brainly.com/question/19786223
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Teach others about the importance of the environment and how they can help save rainforests. Restore damaged ecosystems by planting trees on land where forests have been cut down. Encourage people to live in a way that doesn't hurt the environment. Establish parks to protect rainforests and wildlife.
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