Typically, antlers are found on male deer and are used in competition with other males for mates. Reindeer are the only species of deer in which some females have antlers. While the males shed their antlers by late autumn, females retain their antlers through the winter when they are
pregnant until giving birth in the spring.
What could be a reason for females' adaptation for longer lasting antlers?
Antlers protect females from disease, which is prevalent during the winter.
O Antlers help females defend food sources, which are scarce during the winter.
O Antlers provide warmth for the colder temperatures during the winter.
Antlers store extra water for drinking during the winter.
It

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

20 points and brainlist 1. london has suffered from terrible air pollution for at least seven centuries. why is the city so prone to its famous “london fog? ” what did london do to get rid of its air pollution? 2. why does air pollution cause problems in developing nations more than in developed ones?

Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.